下列各小题中,
是
的充分必要条件的是 ______________ .①
有两个不同的零点;②
是偶函数;③
;④
![](https://img.xkw.com/dksih/QBM/2016/8/11/1572974955003904/1572974961090560/STEM/acffa6ca986d4c13957e46fbe19e91a8.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2016/8/11/1572974955003904/1572974961090560/STEM/118b81bb3d024b038f66fe5b526bb487.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff06b7e123e22a29c022a7ff1d18fee2.png)
![](https://img.xkw.com/dksih/QBM/2016/8/11/1572974955003904/1572974961090560/STEM/6c942dd07b9c41b48dc5cc38e81257f0.png?resizew=180)
![](https://img.xkw.com/dksih/QBM/2016/8/11/1572974955003904/1572974961090560/STEM/e83ef05f5b25496489b03136dd9272df.png?resizew=228)
![](https://img.xkw.com/dksih/QBM/2016/8/11/1572974955003904/1572974961090560/STEM/d310b101c80d43aaa11138d385a35e9f.png?resizew=207)
更新时间:2016-12-04 18:48:39
|
相似题推荐
填空题-单空题
|
较易
(0.85)
【推荐2】条件“
且
”是结论“
”成立的__________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689f982af451283289255c87593ec338.png)
您最近一年使用:0次
填空题-双空题
|
较易
(0.85)
解题方法
【推荐1】已知
,则
的奇偶性为_____ ,
的奇偶性为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c536eeb801a8f81f3c9e6d000b7318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】函数
是_________ 函数.(填“奇”或“偶”)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b7002ca48dc25bc371a41009f2eaac.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐1】若函数
有两个零点,则
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01d24608dbd4b94dbb4a023c8dd1775f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
【推荐2】若存在区间
使得函数
在此区间上仅有两个零点,则
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf35172b295f5f7593c8a4b4e723ebef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf69c6bc0bdf2898a9c7a93d15d09e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
名校
【推荐1】已知质点P在半径为
的圆上按逆时针方向做匀速圆周运动,角速度是
,设
为起始点,记点P在y轴上的射影为M,则
秒时点M的速度是___________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c280b0355df216440f40aefdcafcbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a915213414e67ed256092ec856c1711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3793d98d60080b414ac8acbb975e048f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d5d566ff6408458f8dcb2745b50333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d1461f3b7f2a8a65097c8de1dcbfc7.png)
![](https://img.xkw.com/dksih/QBM/2021/4/28/2709602134089728/2798203828903936/STEM/08df279c-9173-438c-86e1-2880a5c782ed.png?resizew=247)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐2】在平面直角坐标系
中,已知
的顶点在原点,始边与
轴的非负半轴重合,终边与单位圆交于点
,若
,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfc0f16313dbb966f236fcd7cb11685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6276e82a32e930b09195b74701be87e1.png)
您最近一年使用:0次