《高等数学（下）》北语网院19秋在线答案

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19秋《高等数学（下）》作业_1
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1.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3729.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
2.[单选题]将_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image566.gif" width="73" height="24"/>}（_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image568.gif" width="75" height="17"/>}）展开为傅立叶级数时_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image570.gif" width="32" height="24"/>}（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image572.gif\" width=\"33\" height=\"41\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image574.gif\" width=\"20\" height=\"21\" />}                  </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image576.gif\" width=\"28\" height=\"21\" />} </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image578.gif\" width=\"32\" height=\"41\" />}</span>
3.[单选题]设D：_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image462.gif" width="188" height="38"/>}=（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image464.gif\" width=\"39\" height=\"21\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image466.gif\" width=\"31\" height=\"21\" />}               </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image468.gif\" width=\"39\" height=\"21\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image470.gif\" width=\"33\" height=\"19\" />}</span>
4.[单选题]二重积分_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image410.gif" width="143" height="39"/>}（   ），D为_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image412.gif" width="167" height="21"/>}所围成的矩形区域。
    A.7
    B.8
    C.9
    D.10
5.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3737.GIF"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
6.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3781.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
7.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3770.GIF"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
8.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3730.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
9.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3732.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
10.[单选题]如果_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image311.gif" width="52" height="21"/>}具有二阶连续偏导数，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image313.gif" width="83" height="47"/>}（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image315.gif\" width=\"69\" height=\"44\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image317.gif\" width=\"69\" height=\"44\" />}           </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image319.gif\" width=\"69\" height=\"47\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image321.gif\" width=\"69\" height=\"47\" />}</span>
11.[单选题]正项级数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image490.gif" width="53" height="45"/>}，当（   ）时收敛。
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image492.gif\" width=\"28\" height=\"17\" />}2</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image492.gif\" width=\"28\" height=\"17\" />}3              </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image492.gif\" width=\"28\" height=\"17\" />}4</span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image492.gif\" width=\"28\" height=\"17\" />}1</span>
12.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3747.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
13.[单选题]函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image120.gif" width="113" height="24"/>}关于_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image086.gif" width="13" height="15"/>}的偏导数为（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image123.gif\" width=\"92\" height=\"41\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image125.gif\" width=\"89\" height=\"24\" />}     </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image127.gif\" width=\"80\" height=\"24\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image129.gif\" width=\"67\" height=\"24\" />}</span>
14.[单选题]若_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image330.gif" width="45" height="24"/>}，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image332.gif" width="55" height="48"/>}（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image334.gif\" width=\"12\" height=\"15\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image327.gif\" width=\"16\" height=\"13\" />}                    </span>
    C.1
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image338.gif\" width=\"28\" height=\"41\" />}</span>
15.[单选题]已知_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image146.gif" width="128" height="24"/>}，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image148.gif" width="24" height="41"/>}为（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image150.gif\" width=\"60\" height=\"24\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image152.gif\" width=\"53\" height=\"24\" />}                 </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image154.gif\" width=\"60\" height=\"24\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image156.gif\" width=\"61\" height=\"24\" />}</span>
16.[判断题]函数<em>_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image723.gif" width="92" height="24"/>}</em>的全微分<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image725.gif" width="33" height="19"/><i>-</i>_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image727.gif" width="108" height="24"/>}。
    A.对
    B.错
17.[判断题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image743.gif" width="156" height="41"/>}，_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image169.gif" width="16" height="21"/>}、_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image746.gif" width="15" height="17"/>}具有二阶偏导数，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image177.gif" width="36" height="41"/>}_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image749.gif" width="152" height="41"/>}。

    A.对
    B.错
18.[判断题]级数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image652.gif" width="39" height="45"/>}收敛，但_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image654.gif" width="93" height="45"/>}未必收敛。
    A.对
    B.错
19.[判断题]函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image668.gif" width="181" height="24"/>}有极小值。
    A.对
    B.错
20.[判断题]函数<em>_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image767.gif" width="111" height="29"/>}</em>在点_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image262.gif" width="37" height="21"/>}处有极小值。
    A.对
    B.错
21.[判断题]幂级数的收敛域是收敛区间可能再加上端点。
    A.对
    B.错
22.[判断题]设_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image104.gif" width="51" height="21"/>}是连续函数，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image624.gif" width="137" height="37"/><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image626.gif" width="137" height="37"/>}。
    A.对
    B.错
23.[判断题]级数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image790.gif" width="44" height="55"/>}是收敛的。
    A.对
    B.错
24.[判断题]设函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image104.gif" width="51" height="21"/>}在点_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image641.gif" width="53" height="24"/>}处的偏导数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image643.gif" width="49" height="44"/>}都存在，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image104.gif" width="51" height="21"/>}在该点处可微。
    A.对
    B.错
25.[判断题]设_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image580.gif" width="85" height="24"/>}，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image582.gif" width="83" height="44"/>}。
    A.对
    B.错
19秋《高等数学（下）》作业_2
1.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3785.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
2.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3792.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
3.[单选题]设_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image506.gif" width="41" height="45"/>}收敛，则下列级数中一定收敛的是（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image508.gif\" width=\"47\" height=\"45\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image510.gif\" width=\"87\" height=\"45\" />}   </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image512.gif\" width=\"103\" height=\"45\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image514.gif\" width=\"44\" height=\"47\" />}</span>
4.[单选题]函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image187.gif" width="181" height="29"/>}的定义域是（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image189.gif\" width=\"116\" height=\"24\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image191.gif\" width=\"120\" height=\"24\" />}  </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image193.gif\" width=\"120\" height=\"20\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image195.gif\" width=\"120\" height=\"24\" />}</span>
5.[单选题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image299.gif" width="97" height="29"/>}的定义域是（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image301.gif\" width=\"105\" height=\"24\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image303.gif\" width=\"105\" height=\"24\" />}</span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image305.gif\" width=\"105\" height=\"24\" />} </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image307.gif\" width=\"105\" height=\"24\" />}</span>
6.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3804.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
7.[单选题]二元连续函数经过四则运算和复合运算后（   ）
    A.仍为二元连续函数
    B.肯定不是二元函数
    C.必然是一元函数
    D.可能是三元函数
8.[单选题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image175.gif" width="44" height="21"/>}的偏导数中，_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image177.gif" width="36" height="41"/>}（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image179.gif\" width=\"43\" height=\"24\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image181.gif\" width=\"45\" height=\"24\" />}                   </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image183.gif\" width=\"45\" height=\"24\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image185.gif\" width=\"37\" height=\"24\" />}</span>
9.[单选题]在计算多元函数对某个自变量的偏导数时,对于其余自变量的正确处理是（   ）
    A.视为变量
    B.看作常数
    C.无法确定
    D.看做因变量
10.[单选题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image034.gif" width="95" height="24"/>}的通解为（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image036.gif\" width=\"76\" height=\"21\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image038.gif\" width=\"88\" height=\"21\" />}              </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image040.gif\" width=\"96\" height=\"21\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image042.gif\" width=\"96\" height=\"21\" />}</span>
11.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3728.BMP"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
12.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3778.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
13.[单选题]设_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image285.gif" width="83" height="41"/>}，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image287.gif" width="23" height="41"/>}=（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image289.gif\" width=\"64\" height=\"44\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image291.gif\" width=\"53\" height=\"44\" />}                 </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image293.gif\" width=\"53\" height=\"44\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image295.gif\" width=\"53\" height=\"44\" />}</span>
14.[单选题]若_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image342.gif" width="112" height="27"/>}，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image344.gif" width="92" height="44"/>}（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image346.gif\" width=\"63\" height=\"27\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image348.gif\" width=\"63\" height=\"27\" />}             </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image325.gif\" width=\"16\" height=\"41\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image338.gif\" width=\"28\" height=\"41\" />}</span>
15.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3800.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
16.[判断题]函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image596.gif" width="55" height="24"/>}在点_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image598.gif" width="36" height="21"/>}处取得极小值零。
    A.对
    B.错
17.[判断题]在一个级数中任意去掉，增加或者改变有限项后，级数的收敛性不变。
    A.对
    B.错
18.[判断题]两个收敛的级数可以逐项相加与逐项相减。
    A.对
    B.错
19.[判断题]若级数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image764.gif" width="51" height="45"/>}收敛，则称原级数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image630.gif" width="40" height="45"/>}条件收敛。
    A.对
    B.错
20.[判断题]如果常数项级数的部分和数列没有极限，就称该级数是发散的。
    A.对
    B.错
21.[判断题]已知_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image751.gif" width="152" height="21"/>}，若_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image753.gif" width="37" height="21"/>}，_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image755.gif" width="43" height="21"/>}，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image254.gif" width="23" height="41"/>}=_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image758.gif" width="76" height="41"/>}。
    A.对
    B.错
22.[判断题]若级数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image628.gif" width="44" height="45"/>}发散，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image630.gif" width="40" height="45"/>}必发散。
    A.对
    B.错
23.[判断题]函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image634.gif" width="99" height="31"/>}在点（0，0）处可微。
    A.对
    B.错
24.[判断题]若函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image584.gif" width="76" height="21"/>}在_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image586.gif" width="64" height="24"/>}处的两个偏导数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image600.gif" width="69" height="24"/>}与_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image602.gif" width="65" height="25"/>}均存在，则该函数在_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image164.gif" width="16" height="17"/>}点处一定连续。
    A.对
    B.错
25.[判断题]二元函数的驻点必为极值点。
    A.对
    B.错
19秋《高等数学（下）》作业_3
1.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3797.jpg"/>    无忧答案网  q1647861640
    A.[A]
    B.[B]
    C.[C]
    D.[D]
2.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3745.BMP"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
3.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3773.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
4.[单选题]设_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image158.gif" width="159" height="24"/>}则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image160.gif" width="61" height="24"/>}（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image094.gif\" width=\"9\" height=\"17\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image096.gif\" width=\"21\" height=\"17\" />}                  </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image098.gif\" width=\"13\" height=\"17\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image100.gif\" width=\"25\" height=\"17\" />}</span>
5.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3755.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
6.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3752.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
7.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3783.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
8.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3727.GIF"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
9.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3750.BMP"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
10.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3775.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
11.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3790.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
12.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3799.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
13.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3769.GIF"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
14.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3780.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
15.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3795.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
16.[判断题]设_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image674.gif" width="76" height="21"/>}，_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image676.gif" width="75" height="21"/>}，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image678.gif" width="59" height="41"/>}。
    A.对
    B.错
17.[判断题]级数分析中，常常用莱布尼兹判敛法来判断正项级数的敛散性。
    A.对
    B.错
18.[判断题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image717.gif" width="23" height="41"/>}表示_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image719.gif" width="20" height="19"/>}与_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image721.gif" width="20" height="19"/>}的商。
    A.对
    B.错
19.[判断题]方程_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image682.gif" width="61" height="44"/>}所确定的隐函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image684.gif" width="12" height="13"/>}对_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image086.gif" width="13" height="15"/>}的偏导数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image687.gif" width="49" height="44"/>}。
    A.对
    B.错
20.[判断题]设_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image378.gif" width="75" height="21"/>}在点_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image657.gif" width="51" height="24"/>}处可微，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image378.gif" width="75" height="21"/>}在点_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image657.gif" width="51" height="24"/>}必定连续。
    A.对
    B.错
21.[判断题]设_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image104.gif" width="51" height="21"/>}是连续函数，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image636.gif" width="235" height="40"/>}。
    A.对
    B.错
22.[判断题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image733.gif" width="79" height="44"/>}的通解是_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image735.gif" width="61" height="41"/>}。
    A.对
    B.错
23.[判断题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image616.gif" width="88" height="49"/>}。
    A.对
    B.错
24.[判断题]若多元函数在一点处连续，则它在该点处可微。
    A.对
    B.错
25.[判断题]函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image584.gif" width="76" height="21"/>}在_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image586.gif" width="64" height="24"/>}处一定有_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image588.gif" width="73" height="25"/><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image590.gif" width="87" height="25"/>}。
    A.对
    B.错
19秋《高等数学（下）》作业_4
1.[单选题]级数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image496.gif" width="77" height="47"/>}的收敛域为（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image498.gif\" width=\"36\" height=\"21\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image500.gif\" width=\"37\" height=\"21\" />}             </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image502.gif\" width=\"37\" height=\"21\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image504.gif\" width=\"36\" height=\"21\" />}</span>
2.[单选题]下列级数中一定收敛的是（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image516.gif\" width=\"67\" height=\"45\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image518.gif\" width=\"73\" height=\"47\" />}        </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image520.gif\" width=\"77\" height=\"49\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image522.gif\" width=\"120\" height=\"37\" />}</span>
3.[单选题]二元函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image258.gif" width="93" height="24"/>}的极大值点是（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image256.gif\" width=\"35\" height=\"21\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image162.gif\" width=\"35\" height=\"21\" />}             </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image262.gif\" width=\"37\" height=\"21\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image264.gif\" width=\"32\" height=\"21\" />}</span>
4.[单选题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image323.gif" width="93" height="49"/>}（   ）
    A.0
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image325.gif\" width=\"16\" height=\"41\" />}                    </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image327.gif\" width=\"16\" height=\"13\" />}  </span>
    D.不存在
5.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3746.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
6.[单选题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image540.gif" width="40" height="45"/>}的和S=（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image542.gif\" width=\"15\" height=\"41\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image544.gif\" width=\"16\" height=\"41\" />}                    </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image546.gif\" width=\"15\" height=\"41\" />}  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image548.gif\" width=\"16\" height=\"41\" />}</span>
7.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3768.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
8.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3758.GIF"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
9.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3803.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
10.[单选题]级数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image488.gif" width="61" height="47"/>}（   ）
    A.收敛
    B.既不收敛亦不发散
    C.发散
    D.敛散性无法判断
11.[单选题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image044.gif" width="151" height="24"/>}满足初始条件_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image046.gif" width="57" height="24"/>}的特解的是（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image048.gif\" width=\"88\" height=\"24\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image050.gif\" width=\"107\" height=\"24\" />}  </span>
    C.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image052.gif\" width=\"89\" height=\"24\" />} </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image054.gif\" width=\"107\" height=\"24\" />}</span>
12.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3771.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
13.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3738.GIF"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
14.[单选题]<img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3762.jpg"/>
    A.[A]
    B.[B]
    C.[C]
    D.[D]
15.[单选题]过三点<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image065.gif" width="203" height="21"/>的平面方程是（   ）
    A.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image067.gif\" width=\"120\" height=\"19\" />}</span>
    B.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image069.gif\" width=\"120\" height=\"18\" />}             </span>
    C.<span><img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image070.gif\" width=\"136\" height=\"21\" />  </span>
    D.<span>_{<img src=\"http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image072.gif\" width=\"120\" height=\"19\" />}</span>
16.[判断题]若级数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image646.gif" width="40" height="45"/>}收敛，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image648.gif" width="75" height="29"/>}。
    A.对
    B.错
17.[判断题]若函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image104.gif" width="51" height="21"/>}在有界闭区域_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image619.gif" width="17" height="17"/>}上连续，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image104.gif" width="51" height="21"/>}在_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image619.gif" width="17" height="17"/>}上必可取得最大值和最小值。
    A.对
    B.错
18.[判断题]若_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image652.gif" width="39" height="45"/>}收敛于_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image660.gif" width="12" height="15"/>}，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image662.gif" width="89" height="45"/>}收敛于_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image664.gif" width="19" height="19"/>}，即_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image666.gif" width="104" height="45"/>}。
    A.对
    B.错
19.[判断题]设_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image772.gif" width="16" height="16"/>}是以点_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image774.gif" width="87" height="20"/>}和_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image776.gif" width="43" height="20"/>}为顶点的三角形区域，则_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image778.gif" width="69" height="41"/>}=_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image780.gif" width="16" height="41"/>}。
    A.对
    B.错
20.[判断题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image705.gif" width="57" height="24"/>}在点_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image264.gif" width="32" height="21"/>}处，当_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image708.gif" width="65" height="19"/>}，_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image710.gif" width="73" height="21"/>}时的全微分是_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image712.gif" width="33" height="19"/>}。
    A.对
    B.错
21.[判断题]函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image610.gif" width="100" height="29"/>}在_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image598.gif" width="36" height="21"/>}点有极小值。
    A.对
    B.错
22.[判断题]累次积分_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image670.gif" width="217" height="52"/>}可以写成_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image672.gif" width="148" height="49"/>}。
    A.对
    B.错
23.[判断题]_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image650.gif" width="36" height="21"/>}在其间断点处一定不能展开为傅里叶级数。
    A.对
    B.错
24.[判断题]函数_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image613.gif" width="45" height="17"/>}在_{<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image598.gif" width="36" height="21"/>}点有极大值。
    A.对
    B.错
25.[判断题]对多元函数而言，如果函数的各个偏导数存在，则该函数在该点必然连续。
    A.对
    B.错
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