北语网院20春《高等数学(本)》作业_1234
20春《高等数学(本)》作业_1奥鹏作业答案可以联系QQ 761296021
1.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3794.jpg"/>
A.
B.
C.
D.
正确答案:——D——
2.[单选题] 级数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image524.gif" width="129" height="45"/></sub>(k>0)( )
A.发散
B.绝对收敛
C.条件收敛
D.敛散性与k相关
正确答案:——B——
3.[单选题] 下列级数中一定收敛的是( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image516.gif" width="67" height="45" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image518.gif" width="73" height="47" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image520.gif" width="77" height="49" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image522.gif" width="120" height="37" /></sub></span>
正确答案:——A——
4.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3780.jpg"/>
A.
B.
C.
D.
正确答案:————
5.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3783.jpg"/>
A.
B.
C.
D.
正确答案:————
6.[单选题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image090.gif" width="119" height="45"/></sub>,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image092.gif" width="68" height="21"/></sub>( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image094.gif" width="9" height="17" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image096.gif" width="21" height="17" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image098.gif" width="13" height="17" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image100.gif" width="25" height="17" /></sub></span>
正确答案:————
7.[单选题] 在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image164.gif" width="16" height="17"/></sub>处函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image104.gif" width="51" height="21"/></sub>的全微分<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image167.gif" width="21" height="21"/></sub>存在的充分条件为( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image169.gif" width="16" height="21" /></sub>的全部二阶偏导数均存在</span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image169.gif" width="16" height="21" /></sub>连续 </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image169.gif" width="16" height="21" /></sub>的全部一阶偏导数均连续</span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image169.gif" width="16" height="21" /></sub>连续且<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image173.gif" width="41" height="25" /></sub>均存在</span>
正确答案:————
8.[单选题] 二元函数的各偏导数存在是全微分存在的( )
A.充要条件
B.必要条件
C.充分条件
D.无关条件
正确答案:————
9.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3768.jpg"/>
A.
B.
C.
D.
正确答案:————
10.[单选题] 微分方程<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image002.gif" width="119" height="24"/></sub>是( )
A.一阶线性方程
B.一阶齐次方程
C.可分离变量方程
D.二阶微分方程
正确答案:————
11.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3792.jpg"/>
A.
B.
C.
D.
正确答案:————
12.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3804.jpg"/>
A.
B.
C.
D.
正确答案:————
13.[单选题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image012.gif" width="95" height="27"/></sub>满足<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image014.gif" width="57" height="21"/></sub>的特解是( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image016.gif" width="61" height="27" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image018.gif" width="55" height="27" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image020.gif" width="53" height="27" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image022.gif" width="47" height="27" /></sub></span>
正确答案:————
14.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3750.BMP"/>
A.
B.
C.
D.
正确答案:————
15.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3799.jpg"/>
A.
B.
C.
D.
正确答案:————
16.[判断题] 设<em><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image689.gif" width="96" height="24"/></sub></em>,则<em><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image691.gif" width="67" height="25"/></sub></em>48。
A.对
B.错
正确答案:————
17.[判断题] 函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image605.gif" width="91" height="29"/></sub>在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image598.gif" width="36" height="21"/></sub>处连续。
A.对
B.错
正确答案:————
18.[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
正确答案:————
19.[判断题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image743.gif" width="156" height="41"/></sub>,<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image169.gif" width="16" height="21"/></sub>、<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image746.gif" width="15" height="17"/></sub>具有二阶偏导数,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image177.gif" width="36" height="41"/></sub><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image749.gif" width="152" height="41"/></sub>。
A.对
B.错
正确答案:————
20.[判断题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image733.gif" width="79" height="44"/></sub>的通解是<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image735.gif" width="61" height="41"/></sub>。
A.对
B.错
正确答案:————
21.[判断题] 若函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image104.gif" width="51" height="21"/></sub>在有界闭区域<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image619.gif" width="17" height="17"/></sub>上连续,则二重积分<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image621.gif" width="92" height="31"/></sub>存在。
A.对
B.错
正确答案:————
22.[判断题] 函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image596.gif" width="55" height="24"/></sub>在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image598.gif" width="36" height="21"/></sub>处取得极小值零。
A.对
B.错
正确答案:————
23.[判断题] 方程<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image682.gif" width="61" height="44"/></sub>所确定的隐函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image684.gif" width="12" height="13"/></sub>对<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image086.gif" width="13" height="15"/></sub>的偏导数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image687.gif" width="49" height="44"/></sub>。
A.对
B.错
正确答案:————
24.[判断题] 如果函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image608.gif" width="75" height="21"/></sub>的两个二阶混合偏导数连续,则它们一定相等。
A.对
B.错
正确答案:————
25.[判断题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image729.gif" width="76" height="47"/></sub>的收敛区域为<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image731.gif" width="43" height="22"/></sub>。
A.对
B.错
正确答案:————
20春《高等数学(本)》作业_2
1.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3787.jpg"/>
A.
B.
C.
D.
正确答案:——D——
2.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3774.jpg"/>
A.
B.
C.
D.
正确答案:——D——
3.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3784.jpg"/>
A.
B.
C.
D.
正确答案:——C——
4.[单选题] 两个非零矢量<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image055.gif" width="13" height="19"/>与<img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image056.gif" width="15" height="23"/>相互垂直的充要条件是( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image058.gif" width="57" height="19" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image060.gif" width="53" height="19" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image062.gif" width="49" height="19" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image064.gif" width="54" height="19" /></sub></span>
正确答案:————
5.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3803.jpg"/>
A.
B.
C.
D.
正确答案:————
6.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3766.jpg"/>
A.
B.
C.
D.
正确答案:————
7.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3758.GIF"/>
A.
B.
C.
D.
正确答案:————
8.[单选题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image436.gif" width="232" height="32"/></sub>则在极坐标系下<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image438.gif" width="84" height="44"/></sub>=( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image440.gif" width="83" height="35" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image442.gif" width="84" height="40" /></sub></span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image444.gif" width="90" height="35" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image446.gif" width="91" height="40" /></sub></span>
正确答案:————
9.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3772.jpg"/>
A.
B.
C.
D.
正确答案:————
10.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3736.GIF"/>
A.
B.
C.
D.
正确答案:————
11.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3733.jpg"/>
A.
B.
C.
D.
正确答案:————
12.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3762.jpg"/>
A.
B.
C.
D.
正确答案:————
13.[单选题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image044.gif" width="151" height="24"/></sub>满足初始条件<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image046.gif" width="57" height="24"/></sub>的特解的是( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image048.gif" width="88" height="24" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image050.gif" width="107" height="24" /></sub></span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image052.gif" width="89" height="24" /></sub> </span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image054.gif" width="107" height="24" /></sub></span> 答案可以联系QQ 761 29 6021
正确答案:————
14.[单选题] 设D:<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image462.gif" width="188" height="38"/></sub>=( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image464.gif" width="39" height="21" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image466.gif" width="31" height="21" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image468.gif" width="39" height="21" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image470.gif" width="33" height="19" /></sub></span>
正确答案:————
15.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3797.jpg"/>
A.
B.
C.
D.
正确答案:————
16.[判断题] 对于多元函数而言,偏导数存在则一定可微。
A.对
B.错
正确答案:————
17.[判断题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image693.gif" width="77" height="21"/></sub>,则一定有<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image715.gif" width="88" height="47"/></sub>成立。
A.对
B.错
正确答案:————
18.[判断题] 累次积分<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image670.gif" width="217" height="52"/></sub>可以写成<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image672.gif" width="148" height="49"/></sub>。
A.对
B.错
正确答案:————
19.[判断题] 函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image634.gif" width="99" height="31"/></sub>在点(0,0)处可微。
A.对
B.错
正确答案:————
20.[判断题] 函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image668.gif" width="181" height="24"/></sub>有极小值。
A.对
B.错
正确答案:————
21.[判断题] 由极值的定义知,函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image592.gif" width="85" height="24"/></sub>在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image594.gif" width="52" height="21"/></sub>处取得极小值。
A.对
B.错
正确答案:————
22.[判断题] 若<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image652.gif" width="39" height="45"/></sub>收敛于<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image660.gif" width="12" height="15"/></sub>,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image662.gif" width="89" height="45"/></sub>收敛于<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image664.gif" width="19" height="19"/></sub>,即<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image666.gif" width="104" height="45"/></sub>。
A.对
B.错
正确答案:————
23.[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
正确答案:————
24.[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
正确答案:————
25.[判断题] 收敛的级数都是绝对收敛的。
A.对
B.错
正确答案:————
20春《高等数学(本)》作业_3
1.[单选题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image450.gif" width="201" height="29"/></sub>,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image452.gif" width="40" height="39"/></sub>=( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image454.gif" width="81" height="19" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image456.gif" width="37" height="19" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image458.gif" width="73" height="27" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image460.gif" width="69" height="27" /></sub></span>
正确答案:——C——
2.[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
正确答案:——A——
3.[单选题] 函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image120.gif" width="113" height="24"/></sub>关于<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image086.gif" width="13" height="15"/></sub>的偏导数为( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image123.gif" width="92" height="41" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image125.gif" width="89" height="24" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image127.gif" width="80" height="24" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image129.gif" width="67" height="24" /></sub></span>
正确答案:——D——
4.[单选题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image540.gif" width="40" height="45"/></sub>的和S=( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image542.gif" width="15" height="41" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image544.gif" width="16" height="41" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image546.gif" width="15" height="41" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image548.gif" width="16" height="41" /></sub></span>
正确答案:————
5.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3727.GIF"/>
A.
B.
C.
D.
正确答案:————
6.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3732.jpg"/>
A.
B.
C.
D.
正确答案:————
7.[单选题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image378.gif" width="75" height="21"/></sub>由方程<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image380.gif" width="137" height="24"/></sub>所确定的隐函数,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image382.gif" width="23" height="44"/></sub>=( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image384.gif" width="24" height="41" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image386.gif" width="25" height="41" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image388.gif" width="33" height="41" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image390.gif" width="24" height="41" /></sub></span>
正确答案:————
8.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3800.jpg"/>
A.
B.
C.
D.
正确答案:————
9.[单选题] 由方程<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image354.gif" width="60" height="24"/></sub>确定的隐函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image356.gif" width="33" height="21"/></sub>的导数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image358.gif" width="27" height="44"/></sub>为( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image360.gif" width="55" height="44" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image362.gif" width="55" height="44" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image364.gif" width="56" height="44" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image366.gif" width="56" height="44" /></sub></span>
正确答案:————
10.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3753.GIF"/>
A.
B.
C.
D.
正确答案:————
11.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3771.jpg"/>
A.
B.
C.
D.
正确答案:————
12.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3746.jpg"/>
A.
B.
C.
D.
正确答案:————
13.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3759.jpg"/>
A.
B.
C.
D.
正确答案:————
14.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3763.jpg"/>
A.
B.
C.
D.
正确答案:————
15.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3789.jpg"/>
A.
B.
C.
D.
正确答案:————
16.[判断题] 函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image610.gif" width="100" height="29"/></sub>在<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image598.gif" width="36" height="21"/></sub>点有极小值。
A.对
B.错
正确答案:————
17.[判断题] 函数<em><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image767.gif" width="111" height="29"/></sub></em>在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image262.gif" width="37" height="21"/></sub>处有极小值。
A.对
B.错
正确答案:————
18.[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
正确答案:————
19.[判断题] 若函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image584.gif" width="76" height="21"/></sub>在<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image586.gif" width="64" height="24"/></sub>处的两个偏导数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image600.gif" width="69" height="24"/></sub>与<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image602.gif" width="65" height="25"/></sub>均存在,则该函数在<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image164.gif" width="16" height="17"/></sub>点处一定连续。
A.对
B.错
正确答案:————
20.[判断题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image770.gif" width="60" height="31"/></sub>在点(0,0)处连续,偏导数存在,但是不可微分。
A.对
B.错
正确答案:————
21.[判断题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image104.gif" width="51" height="21"/></sub>是连续函数,则<sub><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"/></sub>。
A.对
B.错
正确答案:————
22.[判断题] 若级数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image628.gif" width="44" height="45"/></sub>发散,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image630.gif" width="40" height="45"/></sub>必发散。
A.对
B.错
正确答案:————
23.[判断题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image580.gif" width="85" height="24"/></sub>,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image582.gif" width="83" height="44"/></sub>。
A.对
B.错
正确答案:————
24.[判断题] 不是周期函数一定不能展开为傅里叶级数。
A.对
B.错
正确答案:————
25.[判断题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image705.gif" width="57" height="24"/></sub>在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image264.gif" width="32" height="21"/></sub>处,当<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image708.gif" width="65" height="19"/></sub>,<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image710.gif" width="73" height="21"/></sub>时的全微分是<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image712.gif" width="33" height="19"/></sub>。
A.对
B.错
正确答案:————
20春《高等数学(本)》作业_4
1.[单选题] 级数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image526.gif" width="83" height="48"/></sub>的前9项的和<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image528.gif" width="19" height="24"/></sub>=( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image530.gif" width="21" height="41" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image532.gif" width="16" height="41" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image534.gif" width="16" height="41" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image536.gif" width="23" height="41" /></sub></span>
正确答案:——A——
2.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3731.jpg"/>
A.
B.
C.
D.
正确答案:——C——
3.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3755.jpg"/>
A.
B.
C.
D.
正确答案:——C——
4.[单选题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image279.gif" width="217" height="24"/></sub>,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image281.gif" width="52" height="27"/></sub>=( )
A.41
B.40
C.42
D.39
正确答案:————
5.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3744.jpg"/>
A.
B.
C.
D.
正确答案:————
6.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3775.jpg"/>
A.
B.
C.
D.
正确答案:————
7.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3747.jpg"/>
A.
B.
C.
D.
正确答案:————
8.[单选题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image285.gif" width="83" height="41"/></sub>,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image287.gif" width="23" height="41"/></sub>=( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image289.gif" width="64" height="44" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image291.gif" width="53" height="44" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image293.gif" width="53" height="44" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image295.gif" width="53" height="44" /></sub></span>
正确答案:————
9.[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><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image067.gif" width="120" height="19" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image069.gif" width="120" height="18" /></sub> </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><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image072.gif" width="120" height="19" /></sub></span>
正确答案:————
10.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3739.jpg"/>
A.
B.
C.
D.
正确答案:————
11.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3734.GIF"/>
A.
B.
C.
D.
正确答案:————
12.[单选题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image416.gif" width="53" height="27"/></sub>在平面闭区域D上有界是二重积分<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image418.gif" width="101" height="39"/></sub>存在的( )
A.必要条件
B.充分条件
C.充要条件
D.无关条件
正确答案:————
13.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3760.jpg"/>
A.
B.
C.
D.
正确答案:————
14.[单选题] 函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image226.gif" width="212" height="49"/></sub>的定义域是( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image228.gif" width="76" height="24" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image230.gif" width="79" height="24" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image232.gif" width="100" height="24" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image234.gif" width="100" height="24" /></sub></span>
正确答案:————
15.[单选题] 函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image074.gif" width="103" height="21"/></sub>的全微分为( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image076.gif" width="251" height="23" /></sub></span>
B.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image078.gif" width="206" height="24" /></sub> </span>
C.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image080.gif" width="367" height="24" /></sub></span>
D.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image082.gif" width="165" height="22" /></sub></span>
正确答案:————
16.[判断题] 幂级数的展开是唯一的。
A.对
B.错
正确答案:————
17.[判断题] 级数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image652.gif" width="39" height="45"/></sub>收敛,但<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image654.gif" width="93" height="45"/></sub>未必收敛。
A.对
B.错
正确答案:————
18.[判断题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image650.gif" width="36" height="21"/></sub>在其间断点处一定不能展开为傅里叶级数。
A.对
B.错
正确答案:————
19.[判断题] 函数<em><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image723.gif" width="92" height="24"/></sub></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><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image727.gif" width="108" height="24"/></sub>。
A.对
B.错
正确答案:————
20.[判断题] 二元函数的驻点必为极值点。
A.对
B.错
正确答案:————
21.[判断题] 若函数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image693.gif" width="77" height="21"/></sub>在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image695.gif" width="40" height="21"/></sub>处的偏导数存在,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image697.gif" width="93" height="44"/></sub>是<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image684.gif" width="12" height="13"/></sub>的全微分。
A.对
B.错
正确答案:————
22.[判断题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image632.gif" width="161" height="49"/></sub>不存在。
A.对
B.错
正确答案:————
23.[判断题] 常微分方程都是一阶的。
A.对
B.错
正确答案:————
24.[判断题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image378.gif" width="75" height="21"/></sub>在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image657.gif" width="51" height="24"/></sub>处可微,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image378.gif" width="75" height="21"/></sub>在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image657.gif" width="51" height="24"/></sub>必定连续。
A.对
B.错
正确答案:————
25.[判断题] 方程<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image700.gif" width="109" height="24"/></sub>对应的二元函数只有<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image702.gif" width="113" height="29"/></sub>。
A.对
B.错
正确答案:————
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