重庆大学20春《高等数学（II-2）》第1次
《高等数学（II-2）》第1次1.[单选题]方程<img border="0" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/100f6bbb-7cf6-4ecf-ab05-1f90f3fd72b9/20140707140121.jpg" width="427" height="84" alt="" />表示的曲面是（）。
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A.圆
B.椭球
C.抛物面
D.球面
正确答案:——D——
2.[单选题]平面4y－7z=0的位置特点是（ ）。
A.平行于z轴
B.垂直于x轴
C.平行于y轴
D.通过x轴
正确答案:————
3.[单选题]以下各方程以<img height="87" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/38afd449-39b7-4b28-924f-cc7704dfaf39/20140706110340.jpg" width="162" border="0" alt="" />为解的是（ ）。
A.<IMG height=88 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/38afd449-39b7-4b28-924f-cc7704dfaf39/20140706110401.jpg" width=161 border=0>
B.<IMG height=96 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/38afd449-39b7-4b28-924f-cc7704dfaf39/20140706110415.jpg" width=160 border=0>
C.<IMG height=87 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/38afd449-39b7-4b28-924f-cc7704dfaf39/20140706110425.jpg" width=164 border=0>
D.<IMG height=87 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/38afd449-39b7-4b28-924f-cc7704dfaf39/20140706110435.jpg" width=174 border=0>
正确答案:——A——
4.[单选题]曲面<img height="60" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7bf67349-b75b-48ce-bf1b-ac95c4c6644c/20140707213446.jpg" width="146" border="0" alt="" />的一个法向量为（）。
A.<IMG height=76 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7bf67349-b75b-48ce-bf1b-ac95c4c6644c/20140707213456.jpg" width=179 border=0>
B.<IMG height=67 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7bf67349-b75b-48ce-bf1b-ac95c4c6644c/20140707213504.jpg" width=274 border=0>
C.<IMG height=70 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7bf67349-b75b-48ce-bf1b-ac95c4c6644c/20140707213511.jpg" width=197 border=0>
D.<IMG height=70 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7bf67349-b75b-48ce-bf1b-ac95c4c6644c/20140707213517.jpg" width=192 border=0>
正确答案:————
5.[单选题]下列一阶微分方程中哪个不是可分离变量的微分方程（ ）。
A.<IMG height=91 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/8f98e45d-c665-4443-b20c-9583345cc465/20140706112643.jpg" width=288 border=0>
B.<IMG height=81 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/8f98e45d-c665-4443-b20c-9583345cc465/20140706112653.jpg" width=258 border=0>
C.<IMG height=90 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/8f98e45d-c665-4443-b20c-9583345cc465/20140706112701.jpg" width=156 border=0>
D.<IMG height=95 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/8f98e45d-c665-4443-b20c-9583345cc465/20140706112709.jpg" width=435 border=0>
正确答案:————
6.[单选题]下列方程中表示椭球面的是（ ）。
A.<IMG border=0 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b02b12aa-a760-4b09-b4d9-9509795c9586/20140707172304.jpg" width=299 height=93>
B.<IMG border=0 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b02b12aa-a760-4b09-b4d9-9509795c9586/20140707172316.jpg" width=293 height=89>
C.<IMG border=0 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b02b12aa-a760-4b09-b4d9-9509795c9586/20140707172324.jpg" width=268 height=104>
D.<IMG border=0 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b02b12aa-a760-4b09-b4d9-9509795c9586/20140707172332.jpg" width=319 height=100>
正确答案:————
7.[单选题]下列方程表示抛物面的是（）。
A.<IMG height=70 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b045c2b5-ac91-4d53-b468-ba7375693be7/20140707184053.jpg" width=220 border=0>
B.<IMG height=61 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b045c2b5-ac91-4d53-b468-ba7375693be7/20140707184103.jpg" width=166 border=0>
C.<IMG height=75 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b045c2b5-ac91-4d53-b468-ba7375693be7/20140707184110.jpg" width=198 border=0>
D.<IMG height=57 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b045c2b5-ac91-4d53-b468-ba7375693be7/20140707184117.jpg" width=237 border=0>
正确答案:————
8.[单选题]求解微分方程<img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b120c37f-ab02-4753-9eac-2c2e9a977ad5/20140706103842.jpg" alt="" width="198" height="78" /> 的通解的Matlab命令为（ ）。
A.y=dsolve ('Dy=x+y+1','x')
B.y=dsolve ('Dy=x+y+1')
C.y=dsolve (y'=x+y+1')
D.y=dsolve ('y'=x+y+1','x')
正确答案:————
9.[单选题]求解微分方程 <img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/cac29977-8b98-4f96-9a84-d4cc7a5c8abf/20140706123629.jpg" alt="" width="293" height="88" />使用变换 <img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/cac29977-8b98-4f96-9a84-d4cc7a5c8abf/20140706123644.jpg" alt="" width="114" height="73" />降阶得到的方程是（ ）。
A.<img alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/cac29977-8b98-4f96-9a84-d4cc7a5c8abf/20140706124005.jpg" width="276" height="98" />
B.<img alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/cac29977-8b98-4f96-9a84-d4cc7a5c8abf/20140706123733.jpg" width="262" height="106" />
C.<img alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/cac29977-8b98-4f96-9a84-d4cc7a5c8abf/20140706123745.jpg" width="270" height="94" />
D.<img alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/cac29977-8b98-4f96-9a84-d4cc7a5c8abf/20140706123757.jpg" width="267" height="117" />
正确答案:————
10.[单选题]级数<img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/cb40034d-cdde-4b06-a7ab-26a27dd4d2b7/20140706144935.jpg" alt="" width="468" height="108" />的和为（ ）。
A.1
B.<p><img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/cb40034d-cdde-4b06-a7ab-26a27dd4d2b7/20190225144422311001.png" width="10" height="38" /></p> <p><span style="font-size: 10.5pt;"><span style="font-size: 9pt;"> </span></span></p>
C.<p><img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/cb40034d-cdde-4b06-a7ab-26a27dd4d2b7/20190225144648944001.png" width="10" height="38" /></p>
D.2
正确答案:————
11.[单选题]某微分方程的解 <img height="82" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/85975582-1f1f-48c9-9458-c0c43c77776d/20140706110641.jpg" width="164" border="0" alt="" />满足初始条件<img height="82" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/85975582-1f1f-48c9-9458-c0c43c77776d/20140706110651.jpg" width="149" border="0" alt="" /> ，则C =（ ）。
A.0
B.25
C.1
D.?25
正确答案:————
12.[单选题]二元函数<img height="98" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/45ea71a3-c2cb-4df9-8a85-ef187522809a/20140707203829.jpg" width="344" border="0" alt="" />的定义域是( )。
A.<IMG height=63 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/45ea71a3-c2cb-4df9-8a85-ef187522809a/20140707203925.jpg" width=163 border=0>
B.<P><IMG height=72 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/45ea71a3-c2cb-4df9-8a85-ef187522809a/20140707203953.jpg" width=151 border=0></P>
C.<IMG height=59 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/45ea71a3-c2cb-4df9-8a85-ef187522809a/20140707204000.jpg" width=143 border=0>
D.<IMG height=69 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/45ea71a3-c2cb-4df9-8a85-ef187522809a/20140707204006.jpg" width=162 border=0>
正确答案:————
13.[单选题]设<img width="193" height="73" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/52a48a48-66bf-400d-bf57-7cf977bf343b/20140707211349.jpg" /> ，则以下结果正确的是（ ）。
A.<img width="188" height="93" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/52a48a48-66bf-400d-bf57-7cf977bf343b/20140707211401.jpg" />
B.<img width="183" height="89" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/52a48a48-66bf-400d-bf57-7cf977bf343b/20140707211408.jpg" />
C.<img width="188" height="90" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/52a48a48-66bf-400d-bf57-7cf977bf343b/20140707211417.jpg" />
D.<img width="199" height="96" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/52a48a48-66bf-400d-bf57-7cf977bf343b/20140707211423.jpg" />
正确答案:————
14.[单选题]总长度为2的一根铁丝，可以围成矩形的最大面积是（）。
A.<IMG height=67 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/5f5a5544-fad1-4f25-9277-0e47950d0b60/20140707221257.jpg" width=67 border=0>
B.<IMG height=65 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/5f5a5544-fad1-4f25-9277-0e47950d0b60/20140707221304.jpg" width=81 border=0>
C.<IMG height=70 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/5f5a5544-fad1-4f25-9277-0e47950d0b60/20140707221310.jpg" width=55 border=0>
D.<IMG height=83 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/5f5a5544-fad1-4f25-9277-0e47950d0b60/20140707221318.jpg" width=61 border=0>
正确答案:————
15.[单选题]<img border="0" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/71fa95fb-4777-4ba4-8941-2cf171471aa7/20140710155441.jpg" width="156" height="76" alt="" /> 是微分方程 <img border="0" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/71fa95fb-4777-4ba4-8941-2cf171471aa7/20140710155455.jpg" width="234" height="83" alt="" /> 的解，并且<img border="0" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/71fa95fb-4777-4ba4-8941-2cf171471aa7/20140710155508.jpg" width="178" height="104" alt="" />，则<img border="0" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/71fa95fb-4777-4ba4-8941-2cf171471aa7/20140710155524.jpg" width="120" height="79" alt="" />（）。
A.<IMG border=0 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/71fa95fb-4777-4ba4-8941-2cf171471aa7/20140710155557.jpg" width=72 height=78>
B.<IMG border=0 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/71fa95fb-4777-4ba4-8941-2cf171471aa7/20140710155607.jpg" width=80 height=86>
C.<IMG border=0 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/71fa95fb-4777-4ba4-8941-2cf171471aa7/20140710155619.jpg" width=113 height=99>
D.<IMG border=0 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/71fa95fb-4777-4ba4-8941-2cf171471aa7/20140710155637.jpg" width=126 height=87>
正确答案:————
16.[单选题]设 <img width="533" height="58" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/72194347-2f34-427e-b5c7-0db7c5edd2b9/20140707214808.jpg" />，那么在f(x,y)的驻点 <img width="116" height="60" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/72194347-2f34-427e-b5c7-0db7c5edd2b9/20140707214822.jpg" />取得极大值的条件是( )。
A.<img width="209" height="43" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/72194347-2f34-427e-b5c7-0db7c5edd2b9/20140707214828.jpg" />
B.<img width="178" height="58" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/72194347-2f34-427e-b5c7-0db7c5edd2b9/20140707214841.jpg" />
C.<img width="212" height="49" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/72194347-2f34-427e-b5c7-0db7c5edd2b9/20140707214849.jpg" />
D.<img width="195" height="51" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/72194347-2f34-427e-b5c7-0db7c5edd2b9/20140707214855.jpg" />
正确答案:————
17.[单选题]幂级数<img height="66" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/870b0ab7-ed53-49d1-91b8-2699f63ee323/20140706213440.jpg" width="154" border="0" alt="" /> 的收敛域为( )
A.<P><IMG height=71 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/870b0ab7-ed53-49d1-91b8-2699f63ee323/20140706213639.jpg" width=85 border=0></P>
B.<IMG height=66 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/870b0ab7-ed53-49d1-91b8-2699f63ee323/20140706213540.jpg" width=152 border=0>
C.<IMG height=69 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/870b0ab7-ed53-49d1-91b8-2699f63ee323/20140706213556.jpg" width=121 border=0>
D.<IMG height=74 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/870b0ab7-ed53-49d1-91b8-2699f63ee323/20140706213606.jpg" width=132 border=0>
正确答案:————
18.[单选题]交换二次积分 <img width="265" height="82" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/95f56f48-b6c3-41a5-85c1-248b07104135/20140707224731.jpg" /> 的积分次序可得( ) 。
A.<img width="254" height="76" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/95f56f48-b6c3-41a5-85c1-248b07104135/20140707224739.jpg" />
B.<img width="278" height="69" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/95f56f48-b6c3-41a5-85c1-248b07104135/20140707224747.jpg" />
C.<img width="280" height="71" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/95f56f48-b6c3-41a5-85c1-248b07104135/20140707224754.jpg" />
D.<img width="260" height="84" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/95f56f48-b6c3-41a5-85c1-248b07104135/20140707224800.jpg" />
正确答案:————
19.[单选题]二平面<img width="239" height="67" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/a23e3e03-7483-42b4-9529-66f98db81d79/20140707162530.jpg" /> ，<img width="194" height="92" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/a23e3e03-7483-42b4-9529-66f98db81d79/20140707162540.jpg" />的夹角 <img width="56" height="73" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/a23e3e03-7483-42b4-9529-66f98db81d79/20140707162550.jpg" />=( )。
A.<img width="92" height="58" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/a23e3e03-7483-42b4-9529-66f98db81d79/20140707162603.jpg" />
B.<img width="79" height="50" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/a23e3e03-7483-42b4-9529-66f98db81d79/20140707162612.jpg" />
C.<img width="73" height="65" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/a23e3e03-7483-42b4-9529-66f98db81d79/20140707162622.jpg" />
D.0
正确答案:————
20.[单选题]下面可以作为一条有向直线的方向角的是（ ）。
A.45°，60°，60°
B.30°，45°，60°
C.45°，90°，60°
D.0°，30°，150°
正确答案:————
21.[单选题]设 <img height="0" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b3f29e6c-fa7d-4edf-800b-47af30111d2b/20140707201145.jpg" width="0" border="0" alt="" /><img height="59" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b3f29e6c-fa7d-4edf-800b-47af30111d2b/20140707201145.jpg" width="118" border="0" alt="" />由方程<img height="78" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b3f29e6c-fa7d-4edf-800b-47af30111d2b/20140707201158.jpg" width="250" border="0" alt="" /> 所确定， <img height="90" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b3f29e6c-fa7d-4edf-800b-47af30111d2b/20140707201207.jpg" width="63" border="0" alt="" />=( )。
A.<IMG height=84 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b3f29e6c-fa7d-4edf-800b-47af30111d2b/20140707201217.jpg" width=120 border=0>
B.<IMG height=85 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b3f29e6c-fa7d-4edf-800b-47af30111d2b/20140707201229.jpg" width=90 border=0>
C.<IMG height=72 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b3f29e6c-fa7d-4edf-800b-47af30111d2b/20140707201238.jpg" width=126 border=0>
D.<IMG height=80 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/b3f29e6c-fa7d-4edf-800b-47af30111d2b/20140707201247.jpg" width=127 border=0>
正确答案:————
22.[单选题]无穷级数<img height="83" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/c715a508-0dc7-471a-886a-29a687acfcb7/20140706203824.jpg" width="176" border="0" alt="" /> 是（ ）
A.收敛
B.发散
C.不能确定
D.和级数 <IMG height=89 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/c715a508-0dc7-471a-886a-29a687acfcb7/20140706203931.jpg" width=133 border=0>敛散性一致
正确答案:————
23.[单选题]下列正项级数中收敛的是（ ）
A.<IMG height=89 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/1aad975f-efb3-45d7-a1f2-60bfdb4b2962/20140706150033.jpg" width=179 border=0>
B.<IMG height=109 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/1aad975f-efb3-45d7-a1f2-60bfdb4b2962/20140706150041.jpg" width=171 border=0>
C.<IMG height=112 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/1aad975f-efb3-45d7-a1f2-60bfdb4b2962/20140706150048.jpg" width=227 border=0>
D.<IMG height=121 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/1aad975f-efb3-45d7-a1f2-60bfdb4b2962/20140706150057.jpg" width=168 border=0>
正确答案:————
24.[单选题]幂级数 <img width="301" height="89" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/28f964cc-8b6f-43b5-8f6b-2cac8fc04f95/20140710134523.jpg" />的收敛半径为（ ）。
A.1
B.<img width="98" height="89" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/28f964cc-8b6f-43b5-8f6b-2cac8fc04f95/20140710134541.jpg" />
C.<img width="69" height="95" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/28f964cc-8b6f-43b5-8f6b-2cac8fc04f95/20140710134556.jpg" />
D.以上答案都不对
正确答案:————
25.[单选题]幂级数<img height="90" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/4b839d47-47a8-4000-8268-c30dee35e8b2/20140706215410.jpg" width="403" border="0" alt="" />的和函数为（）。
A.<IMG height=87 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/4b839d47-47a8-4000-8268-c30dee35e8b2/20140706215419.jpg" width=109 border=0>
B.<IMG height=83 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/4b839d47-47a8-4000-8268-c30dee35e8b2/20140706215427.jpg" width=83 border=0>
C.<IMG height=96 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/4b839d47-47a8-4000-8268-c30dee35e8b2/20140706215438.jpg" width=100 border=0>
D.<IMG height=100 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/4b839d47-47a8-4000-8268-c30dee35e8b2/20140706215447.jpg" width=84 border=0>
正确答案:————
26.[单选题]设D是矩形闭区域：<img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/0bac0458-74ed-4f5c-9f7d-28d99e1d3670/20140709140145.jpg" alt="" width="357" height="120" /> ，则积分 <img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/0bac0458-74ed-4f5c-9f7d-28d99e1d3670/20140709140254.jpg" alt="" width="321" height="118" />（ ）。
A.0
B.<img alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/0bac0458-74ed-4f5c-9f7d-28d99e1d3670/20140709140317.jpg" width="189" height="127" />
C.<img alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/0bac0458-74ed-4f5c-9f7d-28d99e1d3670/20140709140325.jpg" width="202" height="107" />
D.<img alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/0bac0458-74ed-4f5c-9f7d-28d99e1d3670/20140709140333.jpg" width="415" height="124" />
正确答案:————
27.[单选题]方程<img height="86" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/309839bf-1c5b-4d69-b8e3-c83b9a6aa7a3/20140706111328.jpg" width="252" border="0" alt="" /> 的特解为（）。
A.<IMG height=81 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/309839bf-1c5b-4d69-b8e3-c83b9a6aa7a3/20140706111346.jpg" width=164 border=0>
B.<IMG height=80 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/309839bf-1c5b-4d69-b8e3-c83b9a6aa7a3/20140706111357.jpg" width=170 border=0>
C.<IMG height=98 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/309839bf-1c5b-4d69-b8e3-c83b9a6aa7a3/20140706111410.jpg" width=161 border=0>
D.<IMG height=102 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/309839bf-1c5b-4d69-b8e3-c83b9a6aa7a3/20140706111418.jpg" width=216 border=0> 答案联系Q1647861640
正确答案:————
28.[单选题]已知函数<img width="224" height="78" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/a9b0dbb5-452b-4399-bcec-bb103079460b/20140707204656.jpg" />在点(1,1)连续，则极限<img width="256" height="95" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/a9b0dbb5-452b-4399-bcec-bb103079460b/20140707204705.jpg" />（ ）。
A.0
B.2
C.+∞
D.不存在
正确答案:————
29.[单选题]幂级数<img height="77" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7fa7f732-90ea-4a5b-ab22-b94da18ffba4/20140706215022.jpg" width="404" border="0" alt="" />的和函数为（）。
A.<IMG height=69 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7fa7f732-90ea-4a5b-ab22-b94da18ffba4/20140706215033.jpg" width=95 border=0>
B.<IMG height=76 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7fa7f732-90ea-4a5b-ab22-b94da18ffba4/20140706215039.jpg" width=128 border=0>
C.<IMG height=80 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7fa7f732-90ea-4a5b-ab22-b94da18ffba4/20140706215048.jpg" width=112 border=0>
D.<IMG height=83 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/7fa7f732-90ea-4a5b-ab22-b94da18ffba4/20140706215055.jpg" width=99 border=0>
正确答案:————
30.[单选题]已知三角形的顶点坐标为A（0，－1，2），B（3，4，5），C（6，7，8），则<img height="68" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/1029c873-9b2e-4be3-805b-a5aa6c4e5dbd/20140706230010.jpg" width="104" border="0" alt="" />的面积为（）。
A.<IMG height=73 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/1029c873-9b2e-4be3-805b-a5aa6c4e5dbd/20140706230019.jpg" width=63 border=0>
B.<IMG height=72 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/1029c873-9b2e-4be3-805b-a5aa6c4e5dbd/20140706230030.jpg" width=115 border=0>
C.<IMG height=77 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/1029c873-9b2e-4be3-805b-a5aa6c4e5dbd/20140706230038.jpg" width=91 border=0>
D.<IMG height=80 alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/1029c873-9b2e-4be3-805b-a5aa6c4e5dbd/20140706230046.jpg" width=82 border=0>
正确答案:————
31.[判断题]过点（2，0，－1）且与直线x=t－2,y=-3t+1,z=－2t+3垂直的平面方程是x－3y－2z–4=0。（）
A.正确
B.错误
正确答案:————
32.[判断题]微分方程<img height="86" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/879d0f53-7ed6-480f-8d43-6a0bb19e57b2/20140706130351.jpg" width="215" border="0" alt="" /> 满足初始条件<img height="85" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/879d0f53-7ed6-480f-8d43-6a0bb19e57b2/20140706130402.jpg" width="260" border="0" alt="" />的特解为<img height="78" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/879d0f53-7ed6-480f-8d43-6a0bb19e57b2/20140706130412.jpg" width="288" border="0" alt="" /> 。（）
A.正确
B.错误
正确答案:————
33.[判断题]已知<img height="75" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/bad7955e-a73b-4636-9bba-88ce3002d6ee/20140706131845.jpg" width="549" border="0" alt="" />是<img height="80" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/bad7955e-a73b-4636-9bba-88ce3002d6ee/20140706131857.jpg" width="286" border="0" alt="" />的解，则微 分方程<img height="84" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/bad7955e-a73b-4636-9bba-88ce3002d6ee/20140706131912.jpg" width="274" border="0" alt="" />通解为<img height="88" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/bad7955e-a73b-4636-9bba-88ce3002d6ee/20140706131924.jpg" width="272" border="0" alt="" />。( )
A.正确
B.错误
正确答案:————
34.[判断题]y=<img width="262" height="81" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/c4db97c7-12bd-4ad9-8713-0e3cc5fb65a5/20140706125341.jpg" />是微分方程 <img width="232" height="81" alt="" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/c4db97c7-12bd-4ad9-8713-0e3cc5fb65a5/20140706125350.jpg" />的通解。（ ）
A.正确
B.错误
正确答案:————
35.[判断题]一条曲线满足其切线在纵轴上的截距等于切点的横坐标，则该曲线的方程为<img height="98" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/d5decdae-4212-47f3-846a-e3d3ed0653a2/20140706115120.jpg" width="240" border="0" alt="" />。( )
A.正确
B.错误
正确答案:————
36.[判断题]曲面 <img height="89" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/d769b19f-15f9-4a06-ac18-df62f896dc28/20140707213615.jpg" width="185" border="0" alt="" />在点(1,2,3)处的法线方程为<img height="105" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/d769b19f-15f9-4a06-ac18-df62f896dc28/20140707213622.jpg" width="246" border="0" alt="" /> 。( )
A.正确
B.错误
正确答案:————
37.[判断题]对于非齐次微分方程<img height="103" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/d872b9c2-9ee9-4dd9-8489-66890e5c6560/20140706104422.jpg" width="297" border="0" alt="" /> 的通解的Matlab命令为y=dsolve ('D2y-2Dy=(x^2+2x)exp(x)','x')。 （ ）
A.正确
B.错误
正确答案:————
38.[判断题]微分方程<img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/c02d8a40-4dda-42ec-ad5e-450b953b701d/20140706114835.jpg" alt="" width="165" height="89" />满足初始条件<img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/c02d8a40-4dda-42ec-ad5e-450b953b701d/20140706114844.jpg" alt="" width="144" height="90" />的特解为 <img src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/c02d8a40-4dda-42ec-ad5e-450b953b701d/20140706114853.jpg" alt="" width="197" height="102" />。
A.正确
B.错误
正确答案:————
39.[判断题]若<img height="75" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/d8cbdf4a-22a6-466b-979b-a9541a2d3160/20140706220044.jpg" width="302" border="0" alt="" /> ，则<img height="94" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/d8cbdf4a-22a6-466b-979b-a9541a2d3160/20140706220054.jpg" width="153" border="0" alt="" />。（）
A.正确
B.错误
正确答案:————
40.[判断题]密度为1的均匀矩形板的长和宽分别为b和h，通过形心并且平行也长边的轴记为l，则物体相对于该轴的转动惯量为<img height="86" src="http://file.5any.com/UniversityV4.0/CourseProblem/c010b0bc/9fb5dbec-4eaf-4f76-b3cc-a3f83ab1de6e/20140707231824.jpg" width="89" border="0" alt="" />。
A.正确
B.错误
正确答案:————
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