高等数学基础（19秋）形考作业4

adminhan

<p><span style="font-size: 14px; font-family: 微软雅黑, 'Microsoft YaHei';">已知点（1,3）为曲线<img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIavbwnTEMP20160910022544715.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png">的拐点，则a,b分别等于( &nbsp; &nbsp;)</span></p>
A:<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">1,2</span><br></p>
B:<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">1,-1</span><br></p>
C:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIgucksTEMP20160910022722447.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
D:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIwytlpTEMP20160910022736480.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>

<p><span style="font-size:14px;font-family:宋体">下列各式正确的是</span><span style="font-size:14px;font-family:宋体"></span></p>
A:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIiywjsTEMP20160910015710906.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
B:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIqhtvbTEMP20160910015721665.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
C:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIuyfycTEMP20160910015733907.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
D:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIjpwseTEMP20160910015744145.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>

<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">设<img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIntrjtTEMP20160910011124984.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png">，则<img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIruetnTEMP20160910011145197.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png">（ &nbsp;）</span><br></p>
A:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIzpkpzTEMP20160910011159908.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
B:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIqphfhTEMP20160910011209075.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
C:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIgbjmgTEMP20160910011219249.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
D:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIxwkyfTEMP20160910011228875.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>

<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/YRWA/2018/1205/PImvuvaYRWA20181205153835631.png?Expires=3436155518&amp;OSSAccessKeyId=gbI8DRLk7JJhLbEw&amp;Signature=%2BPuuntidsxsmWCtKuwb%2Bx7nl5t4%3D" title="图片.png" alt="图片.png">
A:∞
B:-∞
C:0
D:<img class="kfformula" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAD0AAAA1CAYAAADyMeOEAAAAtklEQVRoge3YwQ2DMAyF4TdIL53AK3SRLJR5sg6zpBdQQkBUlVpo7f+ToliIQywrhkQCAAAAAAD/oB4Mu3BdXzN1cZ7ndMVCzmJqlUxDHEKZZ1PApJOCJJ3VEk1qe9u12sWmdXMDgJ90l/R4c9xOWx3wcZOcn6xGWetEQyQ+/nbmnWeumLaVTWoHkDDcV3pPff2KL0UBmlivKMgFwqK/SJACVNu0bVyuK758ssYRrnsDAAAAETwBOUIo3MvT25gAAAAASUVORK5CYII=" data-latex="\frac {\pi } {2}">

<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/SPQG/2018/1206/PIzpnqsSPQG20181206143459172.png?Expires=3436238102&amp;OSSAccessKeyId=gbI8DRLk7JJhLbEw&amp;Signature=dxYF2%2B8QMR2PE%2BUWnxvG5ioLGOc%3D" title="图片.png" alt="图片.png">
A:<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/HONI/2018/1206/PIybnngHONI20181206143513098.png?Expires=3436238115&amp;OSSAccessKeyId=gbI8DRLk7JJhLbEw&amp;Signature=QgyiwJqK8mUq3XRhzdUxzSi2%2F44%3D" title="图片.png" alt="图片.png">
B:<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/XNBY/2018/1206/PIgclhvXNBY20181206143523173.png?Expires=3436238127&amp;OSSAccessKeyId=gbI8DRLk7JJhLbEw&amp;Signature=nK7rJOZ3ZSicZ4snlc1duuXV2r4%3D" title="图片.png" alt="图片.png">
C:<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/AMBY/2018/1206/PIurnwqAMBY20181206143529544.png?Expires=3436238132&amp;OSSAccessKeyId=gbI8DRLk7JJhLbEw&amp;Signature=yxEJ4r%2BX1cW0R2cNlKny6RBscEs%3D" title="图片.png" alt="图片.png">
D:<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/ZZOT/2018/1206/PIqzuskZZOT20181206143540354.png?Expires=3436238143&amp;OSSAccessKeyId=gbI8DRLk7JJhLbEw&amp;Signature=v0OTqW24f%2F6uY6UrH94FuhezPPs%3D" title="图片.png" alt="图片.png">

<p><span style="font-size: 14px; font-family: 微软雅黑, 'Microsoft YaHei';">下列命题正确的是（ &nbsp;）</span></p>
A:<p><span style="font-size: 14px; font-family: 微软雅黑, 'Microsoft YaHei';">驻点一定是极值点</span></p>
B:<p><span style="font-size: 14px; font-family: 微软雅黑, 'Microsoft YaHei';">极值点一定是驻点</span></p>
C:<p><span style="font-size: 14px; font-family: 微软雅黑, 'Microsoft YaHei';">可导的极值点一定是驻点</span></p>
D:<p><span style="font-size: 14px; font-family: 微软雅黑, 'Microsoft YaHei';">不可导点一定不是极值点</span></p>

<p><span style="font-size: 16px; font-family: 微软雅黑, 'Microsoft YaHei';">函数</span><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIuqclgTEMP20160910022022282.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"><span style="font-family: 微软雅黑, 'Microsoft YaHei';">的单调递增区间为（ ）</span></p>
A:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIkanunTEMP20160910022123563.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
B:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIcfvmzTEMP20160910022136501.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
C:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIfuhloTEMP20160910022148360.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>
D:<p><img src="http://oapi.open.com.cn/api/core/file/gofile.do?id=PIgdzacTEMP20160910022203192.png&amp;appkey=5da97a028134420c84123474e7e59e93" title="blob.png" alt="blob.png"></p>

<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/YIPU/2018/1206/PItfpccYIPU20181206151643068.png?Expires=3436240607&amp;OSSAccessKeyId=gbI8DRLk7JJhLbEw&amp;Signature=2lcTvDIUgkVuThh2yWPpaOyqHpc%3D" title="图片.png" alt="图片.png">
A:<span style="font-size:14px;font-family:'微软雅黑',sans-serif">与Δx</span><span style="font-size:14px;font-family:等线"> </span><span style="font-size: 14px; font-family: &quot;微软雅黑&quot;, sans-serif;">是等价的无穷小</span>
B:<span style="font-size:14px;font-family:'微软雅黑',sans-serif">与Δx</span><span style="font-size:14px;font-family:等线"> </span><span style="font-size: 14px; font-family: &quot;微软雅黑&quot;, sans-serif;">是同阶的无穷小</span>
C:<span style="font-size:14px;font-family:'微软雅黑',sans-serif">比Δx</span><span style="font-size:14px;font-family:等线"> </span><span style="font-size: 14px; font-family: &quot;微软雅黑&quot;, sans-serif;">低阶的无穷小</span>
D:<span style="font-size:14px;font-family:'微软雅黑',sans-serif">比Δx</span><span style="font-size:14px;font-family:等线"> </span><span style="font-size: 14px; font-family: &quot;微软雅黑&quot;, sans-serif;">高阶的无穷小</span>

<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/JQHS/2018/1205/PImhrjnJQHS20181205154752001.png?Expires=3436156077&amp;OSSAccessKeyId=gbI8DRLk7JJhLbEw&amp;Signature=Um2Mn%2FDCGTiEvaRADdUIt8yYDqw%3D" title="图片.png" alt="图片.png">
A:<span style="font-size: 14px; font-family: &quot;微软雅黑&quot;, sans-serif;">高阶无穷小</span>
B:<span style="font-size: 14px; font-family: &quot;微软雅黑&quot;, sans-serif;">同阶无穷小，但不等价</span>
C:<span style="font-size: 14px; font-family: &quot;微软雅黑&quot;, sans-serif;">低阶无穷小</span>
D:<span style="font-size: 14px; font-family: &quot;微软雅黑&quot;, sans-serif;">等价无穷小</span>

<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/HUGH/2018/1205/PIwhbojHUGH20181205171357248.png?Expires=3436161239&amp;OSSAccessKeyId=gbI8DRLk7JJhLbEw&amp;Signature=2q7uP%2FEiZrVR%2Bnn5YrQenvTAVFo%3D" title="图片.png" alt="图片.png">
A:1
B:2
C:3
D:4