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【北语网院】18春《高等数学(下)》作业_3(100分)
【北京语言大学】18春《高等数学(下)》作业_3
北语网院作业答案

试卷总分100得分100
第1题&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/eblcuimage/3802.jpg&quot/&gt
A、[A]
B、[B]
C、[C]
D、[D]
第2题&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/eblcuimage/3774.jpg&quot/&gt
A、[A]
B、[B]
C、[C]
D、[D]
第3题&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image252.gif&quotwidth=&quot117&quotheight=&quot24&quot/&gt&lt/sub&gt在点(1,0)处的偏导数&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image254.gif&quotwidth=&quot23&quotheight=&quot41&quot/&gt&lt/sub&gt=()
A、&ltspan&gt1&lt/span&gt
B、&ltspan&gt2&lt/span&gt
C、&ltspan&gt3&lt/span&gt
D、&ltspan&gt4&lt/span&gt
第4题&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/eblcuimage/3757.jpg&quot/&gt
A、[A]
B、[B]
C、[C]
D、[D]
第5题&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/eblcuimage/3795.jpg&quot/&gt
A、[A]
B、[B]
C、[C]
D、[D]
第6题&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/eblcuimage/3801.jpg&quot/&gt
A、[A]
B、[B]
C、[C]
D、[D]
第7题下列微分方程中,是可分离变量的方程是()
A、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image004.gif&quotwidth=&quot72&quotheight=&quot41&quot/&gt&lt/sub&gt&lt/span&gt
B、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image006.gif&quotwidth=&quot87&quotheight=&quot24&quot/&gt&lt/sub&gt&lt/span&gt
C、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image008.gif&quotwidth=&quot120&quotheight=&quot23&quot/&gt&lt/sub&gt&lt/span&gt
D、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image010.gif&quotwidth=&quot91&quotheight=&quot24&quot/&gt&lt/sub&gt&lt/span&gt
第8题&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/eblcuimage/3769.GIF&quot/&gt
A、[A]
B、[B]
C、[C]
D、[D]
第9题若&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image342.gif&quotwidth=&quot112&quotheight=&quot27&quot/&gt&lt/sub&gt,则&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image344.gif&quotwidth=&quot92&quotheight=&quot44&quot/&gt&lt/sub&gt()    奥鹏易百

A、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image346.gif&quotwidth=&quot63&quotheight=&quot27&quot/&gt&lt/sub&gt&lt/span&gt
B、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image348.gif&quotwidth=&quot63&quotheight=&quot27&quot/&gt&lt/sub&gt&lt/span&gt
C、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image325.gif&quotwidth=&quot16&quotheight=&quot41&quot/&gt&lt/sub&gt&lt/span&gt
D、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image338.gif&quotwidth=&quot28&quotheight=&quot41&quot/&gt&lt/sub&gt&lt/span&gt
第10题二元连续函数经过四则运算和复合运算后()
A、&ltspan&gt仍为二元连续函数&lt/span&gt
B、&ltspan&gt肯定不是二元函数&lt/span&gt
C、&ltspan&gt必然是一元函数&lt/span&gt
D、&ltspan&gt可能是三元函数&lt/span&gt
第11题&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/eblcuimage/4331.jpg&quot/&gt
A、[A]
B、[B]
C、[C]
D、[D]
第12题二元函数&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image104.gif&quotwidth=&quot51&quotheight=&quot21&quot/&gt&lt/sub&gt可微是它的两个偏导数存在的()
A、&ltspan&gt充分而非必要条件&lt/span&gt
B、&ltspan&gt必要而非充分条件&lt/span&gt
C、&ltspan&gt充分必要条件&lt/span&gt
D、&ltspan&gt既非充分也非必要条件&lt/span&gt
第13题设&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image436.gif&quotwidth=&quot232&quotheight=&quot32&quot/&gt&lt/sub&gt则在极坐标系下&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image438.gif&quotwidth=&quot84&quotheight=&quot44&quot/&gt&lt/sub&gt=()
A、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image440.gif&quotwidth=&quot83&quotheight=&quot35&quot/&gt&lt/sub&gt&lt/span&gt
B、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image442.gif&quotwidth=&quot84&quotheight=&quot40&quot/&gt&lt/sub&gt&lt/span&gt
C、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image444.gif&quotwidth=&quot90&quotheight=&quot35&quot/&gt&lt/sub&gt&lt/span&gt
D、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image446.gif&quotwidth=&quot91&quotheight=&quot40&quot/&gt&lt/sub&gt&lt/span&gt
第14题已知&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image146.gif&quotwidth=&quot128&quotheight=&quot24&quot/&gt&lt/sub&gt,则&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image148.gif&quotwidth=&quot24&quotheight=&quot41&quot/&gt&lt/sub&gt为()
A、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image150.gif&quotwidth=&quot60&quotheight=&quot24&quot/&gt&lt/sub&gt&lt/span&gt
B、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image152.gif&quotwidth=&quot53&quotheight=&quot24&quot/&gt&lt/sub&gt&lt/span&gt
C、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image154.gif&quotwidth=&quot60&quotheight=&quot24&quot/&gt&lt/sub&gt&lt/span&gt
D、&ltspan&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image156.gif&quotwidth=&quot61&quotheight=&quot24&quot/&gt&lt/sub&gt&lt/span&gt
第15题&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/eblcuimage/3791.jpg&quot/&gt
A、[A]
B、[B]
C、[C]
D、[D]
第16题方程&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image682.gif&quotwidth=&quot61&quotheight=&quot44&quot/&gt&lt/sub&gt所确定的隐函数&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image684.gif&quotwidth=&quot12&quotheight=&quot13&quot/&gt&lt/sub&gt对&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image086.gif&quotwidth=&quot13&quotheight=&quot15&quot/&gt&lt/sub&gt的偏导数&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image687.gif&quotwidth=&quot49&quotheight=&quot44&quot/&gt&lt/sub&gt。
√、对
、错
正确答案√
第17题幂级数的展开是唯一的。
√、对
、错
正确答案√
第18题已知&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image751.gif&quotwidth=&quot152&quotheight=&quot21&quot/&gt&lt/sub&gt,若&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image753.gif&quotwidth=&quot37&quotheight=&quot21&quot/&gt&lt/sub&gt,&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image755.gif&quotwidth=&quot43&quotheight=&quot21&quot/&gt&lt/sub&gt,则&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image254.gif&quotwidth=&quot23&quotheight=&quot41&quot/&gt&lt/sub&gt=&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image758.gif&quotwidth=&quot76&quotheight=&quot41&quot/&gt&lt/sub&gt。
√、对
、错
正确答案√
第19题由极值的定义知,函数&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image592.gif&quotwidth=&quot85&quotheight=&quot24&quot/&gt&lt/sub&gt在点&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image594.gif&quotwidth=&quot52&quotheight=&quot21&quot/&gt&lt/sub&gt处取得极小值。
√、对
、错
正确答案√
第20题&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image632.gif&quotwidth=&quot161&quotheight=&quot49&quot/&gt&lt/sub&gt不存在。
√、对
、错
正确答案
第21题累次积分&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image670.gif&quotwidth=&quot217&quotheight=&quot52&quot/&gt&lt/sub&gt可以写成&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image672.gif&quotwidth=&quot148&quotheight=&quot49&quot/&gt&lt/sub&gt。
√、对
、错
正确答案
第22题&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image770.gif&quotwidth=&quot60&quotheight=&quot31&quot/&gt&lt/sub&gt在点(00)处连续,偏导数存在,但是不可微分。
√、对
、错
正确答案√
第23题设&ltem&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image689.gif&quotwidth=&quot96&quotheight=&quot24&quot/&gt&lt/sub&gt&lt/em&gt,则&ltem&gt&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image691.gif&quotwidth=&quot67&quotheight=&quot25&quot/&gt&lt/sub&gt&lt/em&gt48。
√、对
、错
正确答案
第24题若函数&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image104.gif&quotwidth=&quot51&quotheight=&quot21&quot/&gt&lt/sub&gt在有界闭区域&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image619.gif&quotwidth=&quot17&quotheight=&quot17&quot/&gt&lt/sub&gt上连续,则二重积分&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image621.gif&quotwidth=&quot92&quotheight=&quot31&quot/&gt&lt/sub&gt存在。
√、对
、错
正确答案√
第25题如果函数&ltsub&gt&ltimgsrc=&quothttp//otsstatic.chinaedu.net/ots/blcu/quesimages/e0/25/52ae8b227d744fb3af0681b3837ce025/xia.files/image608.gif&quotwidth=&quot75&quotheight=&quot21&quot/&gt&lt/sub&gt的两个二阶混合偏导数连续,则它们一定相等。
√、对
、错
正确答案√

奥鹏易百

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