北语网院21秋《高等数学(本)》作业_3题目及答案
21秋《高等数学(本)》作业_31.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3728.BMP"/>
A.
B.
C.
D.
答:——A——
2.[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>
答:——C——
3.[单选题] 设<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image266.gif" width="117" height="24"/></sub>,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image268.gif" width="49" height="47"/></sub>( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image270.gif" width="13" 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/image272.gif" width="12" 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/image274.gif" width="21" 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/image098.gif" width="13" height="17" /></sub></span>
答:——B——
4.[单选题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image368.gif" width="95" height="52"/></sub>=( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image370.gif" width="13" 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/image094.gif" width="9" 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/image373.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/image375.gif" width="15" height="41" /></sub></span>
答:————
5.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3787.jpg"/>
A.
B.
C.
D.
答:————
6.[单选题] 已知<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image106.gif" width="145" height="24"/></sub>,则<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image108.gif" width="69" height="21"/></sub>( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image110.gif" width="35" 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/image112.gif" width="49" 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/image114.gif" width="49" 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/image116.gif" width="49" height="21" /></sub></span>
答:————
7.[单选题] 二重积分<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image410.gif" width="143" height="39"/></sub>( ),D为<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image412.gif" width="167" height="21"/></sub>所围成的矩形区域。
A.7
B.8
C.9
D.10
答:————
8.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3731.jpg"/>
A.
B.
C.
D.
答:————
9.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3795.jpg"/>
A.
B.
C.
D.
答:————
10.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3793.jpg"/>
A.
B.
C.
D.
答:————
11.[单选题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image034.gif" width="95" height="24"/></sub>的通解为( )
A.<span><sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image036.gif" width="76" 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/image038.gif" width="88" 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/image040.gif" width="96" 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/image042.gif" width="96" height="21" /></sub></span>
答:————
12.[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
答:————
13.[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>
答:————
14.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3744.jpg"/>
A.
B.
C.
D.
答:————
15.[单选题] <img src="http://otsstatic.chinaedu.net/ots/blcu/eblcuimage/3737.GIF"/>
A.
B.
C.
D.
答:————
16.[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
答:————
17.[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<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<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>上必可取得最大值和最小值。
A.对
B.错
答:————
18.[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><p><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>。</p>
A.对
B.错
答:————
19.[判断题] 某车间要用铁板做成一个体积为<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image782.gif" width="31" height="21"/></sub>的有盖长方体水箱,那么,当水箱的长<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image784.gif" width="61" height="23"/></sub>,宽<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image786.gif" width="61" height="25"/></sub>,高<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image788.gif" width="71" height="45"/></sub>时,水箱用料最省。
A.对
B.错
答:————
20.[判断题] 正项级数收敛的充要条件是其部分和数列有上界。
A.对
B.错
答:————
21.[判断题] <sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image717.gif" width="23" height="41"/></sub>表示<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image719.gif" width="20" height="19"/></sub>与<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image721.gif" width="20" height="19"/></sub>的商。
A.对
B.错
答:————
22.[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
答:————
23.[判断题] 设函数<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>在点<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image641.gif" width="53" height="24"/></sub>处的偏导数<sub><img src="http://otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b22-7d74-4fb3-af06-81b3837ce025/xia.files/image643.gif" width="49" height="44"/></sub>都存在,则<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>在该点处可微。
A.对
B.错
答:————
24.[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
答:————
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
答:————
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