东财《经济数学》在线作业一-0004

adminhan

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051113/07528cc2.JPG" />。
A:A
B:B
C:C
D:D

<p>题见下图</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051105/2a5f298a.JPG" /></p>
A:必要条件；
B:充分条件；
C:充要条件；
D:无关条件

<p><font face="Arial">题见下图</font></p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051105/194206b8.JPG" /></p>
A:（0,1）和（1,0）；
B:不存在；（
C:0,-1）和（1,0）；
D:（0,1）和（-1,0）

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20060407/089cf92d.JPG" />。
A:a
B:b
C:c
D:d

<p>题见图片</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051105/63acfba7.JPG" /></p>
A:上升且凸；
B:下降且凸；
C:上升且下凹；
D:下降且下凹

<p>题见图片</p><p><img style="WIDTH: 512px; HEIGHT: 414px" height="318" width="512" alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051111/ccc9fb52.JPG" /></p>
A:A
B:B
C:C
D:D

<p>题见图片</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051104/c64e73f5.JPG" /></p>
A:A
B:B
C:C
D:D

<p>题见图片</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051105/21068fa2.JPG" /></p>
A:A
B:B
C:C
D:D

<p>题见下图</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20070515/c98f7857.JPG" /></p>
A:A
B:B
C:C
D:D

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20061024/8190ced4.JPG" />。
A:A
B:B
C:C
D:D

函数y=tanx在区间( )内单调增加.
A:[0,&pi;/2]
B:[0,&pi;]
C:[0,1]
D:以上都不对

<p>题见下图</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051104/3fdcab21.JPG" /></p>
A:A
B:B
C:C
D:D

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051113/11c87033.JPG" />。
A:A
B:B
C:C
D:D

<p>题见下图</p><p><img style="WIDTH: 512px; HEIGHT: 403px" height="125" width="512" alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051105/652bec1e.JPG" /></p>
A:A
B:B
C:C
D:D

<p><font face="Arial">题见下图</font></p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051105/e2cc68f9.JPG" /></p>
A:x=-1；
B:x=1；
C:y=0；
D:y=1

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20060407/055820f1.JPG" />。
A:a
B:b
C:c
D:d

<p>题见图片</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051104/2e71362a.JPG" /></p>
A:A
B:B
C:C
D:D

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20060407/c8a50a0b.JPG" />。
A:a
B:b
C:c
D:d

<p>题见图片</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051104/10b1bb7b.JPG" /></p>
A:初等函数；
B:一个函数；
C:两个函数；
D:三个函数

<p>题见图片</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20070515/fc5ffce8.JPG" /></p>
A:A
B:B
C:C
D:D

<img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20060407/f4e706b1.JPG" />。
A:a
B:b
C:c
D:d

<p>题见下图</p><p><img style="WIDTH: 512px; HEIGHT: 380px" height="184" width="512" alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051105/f4950519.JPG" /></p>
A:A
B:B
C:C
D:D

<p>题见图片</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051111/da0503f3.JPG" /></p>
A:A
B:B
C:C
D:D

<p>题见下图</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20070515/71b7b749.JPG" /></p>
A:A
B:B
C:C
D:D

<p>题见图片</p><p><img alt="" src="http://file.open.com.cn/Lms/ItemDBAttachments/image/singleselect/dcwjfe/20051104/eb507f4b.JPG" /></p>
A:A
B:B
C:C
D:D