2013·辽宁沈阳·一模
1 . 函数f(x)=
在
上是单调函数的必要不充分条件是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d2d13fbf4a5940f09baa69efa23c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ce8d5ba37479b30f40e2ffc4b5e1f1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2013·辽宁沈阳·一模
解题方法
2 . 由
的图像向左平移
个单位,再把所得图像上所有点的横坐标伸长到原来的2倍得到
的图像,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a9a4d3f7a622bf4c8c887c5709c9de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.2sin![]() | B.2sin![]() |
C.2sin![]() | D.2sin![]() |
您最近一年使用:0次
2013·辽宁沈阳·一模
3 . 已知
的二面角
,点A
,
,C为垂足,
,BD
,D为垂足,若AC=BD=DC=1则AB与
面所成角的正弦值为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9bf2423499d45354dbc8377f1f04e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754bbd99327195520a4ca3ce3b9a0577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2c3f63b766d0373b7f1df007d03f3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c638fb895acd987140d0ca6bef097499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16acea101c98a280a70c2fa0b2c04dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a05bb4210bfcc2d44d7db89837a1149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
您最近一年使用:0次
2013·辽宁沈阳·一模
4 .
,若对任意
,
恒成立,则a的取值范围是________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8405a6fc7a17f8419d5dfe85a9e30582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9bcc3e66496eee2d8476f2362925380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64831d66b64c0125dbc386ffc7744fb.png)
您最近一年使用:0次
2013·辽宁沈阳·一模
5 . 已知平面
截一球面得圆M,过圆心M且与
成
角的平面
截该球面得圆N若圆M、圆N面积分别为4
、13
,则球面面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdab625e32e38d1c72c901cece0e147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5adfe85535b699655d5ed2f3322d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5adfe85535b699655d5ed2f3322d8.png)
A.36![]() | B.48![]() | C.64![]() | D.100![]() |
您最近一年使用:0次