已知等比数列
的公比为
,那么“
”是“
无单调性”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa9bf65189dfb57a61644a1cb27f361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
A.充分不必要条件 | B.必须不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
2020高三·全国·专题练习 查看更多[2]
更新时间:2021-01-17 15:41:33
|
【知识点】 判断命题的充分不必要条件
相似题推荐
单选题
|
较易
(0.85)
【推荐1】给出下列4个命题,其中正确的命题是( )
①若
,则
=
;
②若
,则对
;
③若
,则
,使![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b092b3ba84bbcd717aeb9c5ea8d136.png)
④若A,B,C,D是空间四点,命题
:A,B,C,D四点不共面,命题
:直线AB和CD不相交,则
是
成立的充分不必要条件.
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f141f8c9bdc87c660a63379839b17628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66dd8dfdc4b0b3f511a27bfe31f68181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd6b1b690425cf8dd7427f978774463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f612ce3b03a5fdb56ee5f347407f02e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d85aaf860b8d03b2b756bf9e96d9f24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1e38e84b4b5486e2de02e268a8afbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b092b3ba84bbcd717aeb9c5ea8d136.png)
④若A,B,C,D是空间四点,命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
A.①② | B.①③ | C.②④ | D.①②④ |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】
是
的( )条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ed5a166d9052c5bcfda69693ae5e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead91c8abc04de55f735942d27dc2ac3.png)
A.充分必要 | B.充分不必要 |
C.必要不充分 | D.既不充分也不必要 |
您最近一年使用:0次