西交《高等数学（上）》在线作业

adminhan

<img width="575" height="218" alt="" src="http://file.open.com.cn/ItemDB/20944/345aec68-9550-4af3-aeea-361df3adea21/20155215511135.png" />
A:A
B:B
C:C
D:D

<img align="top" width="219" height="72" alt="" src="http://file.open.com.cn/ItemDB/20944/8ab02430-16c7-4d2b-876c-62992345f23b/2010520141854203.JPG" />&nbsp;
A:A
B:B
C:C
D:D

<img width="468" height="121" alt="" src="http://file.open.com.cn/ItemDB/20944/1c14cf5e-612c-4e5e-9210-3ecec9a0d201/2015521553598.png" />
A:A
B:B
C:C
D:D

当x→0时,函数(x2-1)/(x-1)的极限  ( )
A:等于2
B:等于0
C:为∞
D:不存在但不为∞

在区间(-1,0)上由(   )给出的函数是单调增加的
A:y=∣x∣+1
B:y=5x-2
C:y=-4x+3
D:y=∣x∣-2x

<img width="528" height="134" alt="" src="http://file.open.com.cn/ItemDB/20944/0834dc30-e19b-4903-ab47-03870a048884/20155214319715.png" />
A:A
B:B
C:C
D:D

<img width="480" height="116" alt="" src="http://file.open.com.cn/ItemDB/20155215412949.png" />
A:A
B:B
C:C
D:D

&nbsp;<img align="top" width="468" height="92" alt="" src="http://file.open.com.cn/ItemDB/20944/08b99395-1b7c-4597-8241-7297f2ef5d7a/2009108234849609.JPG" />
A:A
B:B
C:C
D:D

&nbsp;<img align="top" width="468" height="105" alt="" src="http://file.open.com.cn/ItemDB/20944/8f153f51-d0fa-46ce-aa98-d36feb0d0e2d/2009108233827447.JPG" />
A:A
B:B
C:C
D:D

<img align="top" width="331" height="104" alt="" src="http://file.open.com.cn/ItemDB/20944/b3ef1826-f1fd-4a28-bcb4-747f16aabf69/201052014230520.JPG" />&nbsp;
A:A
B:B
C:C
D:D

<img height="273" width="446" alt="" src="http://file.open.com.cn/ItemDB/20944/0a106658-6b68-4738-9d8b-80af5c65111d/20151241041260.png" />&nbsp;
A:A
B:B
C:C
D:D

f(x)=xtanxe^sinx是(   )
A:偶函数
B:无界函数
C:周期函数
D:单调函数

<img height="94" width="599" alt="" src="http://file.open.com.cn/ItemDB/20944/3b8e5e2a-9c38-4c03-9b6c-03a9d060aede/201512494555477.png" />&nbsp;
A:A
B:B
C:C
D:D

若f(x)=max{2∣x∣,∣x+1∣}，则minf(x)之值为（  ）
A:2/3
B:0
C:1
D:2

<img src="http://file.open.com.cn/ueditorupload/image/2018/12/01/6367927357997044388106152.jpg" title="单选9.jpg" alt="单选9.jpg">
A:A
B:B
C:C
D:D

<img src="http://file.open.com.cn/ueditorupload/image/2018/12/01/6367927365549298883011327.jpg" title="单选10.jpg" alt="单选10.jpg">
A:A
B:B
C:C
D:D

<img height="205" width="589" alt="" src="http://file.open.com.cn/ItemDB/20944/03ef7010-4c07-4a6d-85bf-7bbe0d6453ff/2015124101146123.png" />&nbsp;
A:A
B:B
C:C
D:D

当x→0时,e^xsinx2-e^x与x?的同价无穷小,则为n(  )
A:5
B:4
C:5/2
D:2

&nbsp;&nbsp;&nbsp;&nbsp; <img align="top" width="232" height="104" alt="" src="http://file.open.com.cn/ItemDB/20944/a89d79fe-3c60-4bc1-ab40-a814e4ba7357/2010520142221285.JPG" />
A:A
B:B
C:C
D:D

&nbsp;<img align="top" width="468" height="88" alt="" src="http://file.open.com.cn/ItemDB/20944/9188297f-41ba-4ae7-beaf-b1ccf0c64b1a/2009108234336412.JPG" />
A:A
B:B
C:C
D:D

当x>0时,曲线y=xsin(1/x)  (  )
A:有且仅有水平渐近线
B:有且仅有铅直渐近线
C:既有水平渐近线也有铅直渐近线
D:既无水平渐近线也无铅直渐近线.

<img src="http://file.open.com.cn/ueditorupload/image/2018/12/01/6367927351189961295069485.jpg" title="单选8.jpg" alt="单选8.jpg">
A:A
B:B
C:C
D:D

<img height="149" width="483" alt="" src="http://file.open.com.cn/ItemDB/20944/060036e5-990b-4959-9516-9534781dea14/201512410548248.png" />&nbsp;
A:A
B:B
C:C
D:D

&nbsp;<img align="top" width="346" height="135" alt="" src="http://file.open.com.cn/ItemDB/20944/9d0e8f22-1d39-4f31-97a9-12764e6d5dbb/200910823521835.JPG" />
A:A
B:B
C:C
D:D

<img width="497" height="118" alt="" src="http://file.open.com.cn/ItemDB/20944/40f5a0f3-80fd-4a7e-8200-0dce8e0266f9/20155215451200.png" />
A:A
B:B
C:C
D:D

<img width="535" height="104" alt="" src="http://file.open.com.cn/ItemDB/20944/29a1e425-d0a9-4c22-bf0c-a37bd577e772/201552142959920.png" />
A:A
B:B
C:C
D:D

<img src="http://file.open.com.cn/ueditorupload/image/2018/12/01/6367927425753533714282257.jpg" title="单选18.jpg" alt="单选18.jpg">
A:A
B:B
C:C
D:D

<img height="100" width="571" alt="" src="http://file.open.com.cn/ItemDB/20944/9a4bfddb-d43c-4fec-b565-379414f467c1/201512410828995.png" />&nbsp;
A:A
B:B
C:C
D:D

<img width="469" height="125" alt="" src="http://file.open.com.cn/ItemDB/20944/1c27d7fb-d905-40c0-a75f-18c6a9d3acfe/201552143013369.png" />
A:A
B:B
C:C
D:D

<img height="130" width="666" alt="" src="http://file.open.com.cn/ItemDB/20944/98336b8b-0138-4253-9ffe-1ff2c2a92bed/201512495810575.png" />&nbsp;
A:A
B:B
C:C
D:D

若f(x)=max{2∣x∣,∣x+1∣},则minf(x)之值为(  )
A:2/3
B:0
C:1
D:2

<img width="471" height="151" alt="" src="http://file.open.com.cn/ItemDB/20155215350797.png" />
A:A
B:B
C:C
D:D

&nbsp;<img align="top" width="294" height="73" alt="" src="http://file.open.com.cn/ItemDB/20944/aa6fd8e2-6a85-4ac9-8011-40691eced756/2009108234934142.JPG" />
A:A
B:B
C:C
D:D

<img height="136" width="579" alt="" src="http://file.open.com.cn/ItemDB/20944/8983c1a9-3176-45c0-b38b-efe22c8119ce/201512495737144.png" />&nbsp;
A:A
B:B
C:C
D:D

<img width="443" height="178" alt="" src="http://file.open.com.cn/ItemDB/20944/b0c0fb52-cddf-4447-9f07-0eae4d3696c8/201552142731262.png" />
A:A
B:B
C:C
D:D

<img width="647" height="118" alt="" src="http://file.open.com.cn/ItemDB/20944/c155478a-f2ed-489b-a5e8-a9d37573fddb/2015521427414.png" />
A:A
B:B
C:C
D:D

<img width="678" height="164" alt="" src="http://file.open.com.cn/ItemDB/20944/3c8bc10b-4776-44bd-a75e-84ea18c87a7f/201552142547691.png" />
A:A
B:B
C:C
D:D

&nbsp;<img align="top" width="407" height="158" alt="" src="http://file.open.com.cn/ItemDB/20944/5241f184-cabe-4c4f-af6e-8c4d07194076/20091090020933.JPG" />
A:A
B:B
C:C
D:D

&nbsp;<img align="top" width="258" height="70" alt="" src="http://file.open.com.cn/ItemDB/20944/f6e26060-57b0-447c-9d50-f33b8fb65202/2009108233020498.JPG" />
A:A
B:B
C:C
D:D

<img height="169" width="789" alt="" src="http://file.open.com.cn/ItemDB/20944/44ddde02-b5e0-42ce-ac82-4316027fa5c6/2015124101340740.png" />&nbsp;
A:A
B:B
C:C
D:D

<img src="http://file.open.com.cn/ueditorupload/image/2018/12/01/6367927477766605705327271.jpg" title="判断3.jpg" alt="判断3.jpg">
A:对
B:错

常数的导数为0
A:错误
B:正确

曲线的凹凸性发生改变的点是曲线的拐点
A:错误
B:正确

<img src="http://file.open.com.cn/ueditorupload/image/2018/12/01/6367927482331288253188734.jpg" title="判断4.jpg" alt="判断4.jpg">
A:对
B:错

函数y=sinx在其定义域内有界
A:错误
B:正确

<img src="http://file.open.com.cn/ueditorupload/image/2018/12/01/6367927684805212914982890.jpg" title="判断20.jpg" alt="判断20.jpg">
A:对
B:错

定积分上下限交换位置后值不变
A:错误
B:正确

设a是函数f(x)的驻点，且f"(a)不等于0，若f"(a)&gt;0，则f(x)有极小值f(a)
A:错误
B:正确

若a为f(x)的拐点，则必有f"(a)=0
A:错误
B:正确

<img src="http://file.open.com.cn/ueditorupload/image/2018/12/01/6367927473779380599697248.jpg" title="判断2.jpg" alt="判断2.jpg">
A:对
B:错