设
,当
时
;当
时
.例如
,则“
,
或
,
”是“
”的( )条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7569cd7e9b31ad838230133b9bc8314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bea49c28c8a261825babd8667cd7a26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a05cb3647f1ad81e328f8379b51291b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bdc69abbcdf98c42b649f8d8d4cd1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b85349216e2fbdaa860e9f81b3924af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3128f4627dd7c29e4c4f557cbd8aa2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86304c3e26200299a0480641525a283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e654165ffea876a7210013a48cb89e48.png)
A.充分不必要 | B.必要不充分 |
C.充要 | D.既不充分也不必要 |
更新时间:2023-12-17 15:58:57
|
【知识点】 判断命题的充分不必要条件
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】已知
是公比为
的等比数列.则“
,
恒成立”是“
是
的一个最值”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fde3541708c770e48a06c28f9a3434.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12d0bd9afdd4e53ff37f5bfcaa1106c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c57177e14cdf8c2c932fe49ca63ed29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.即不充分也不必要条件 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知球
的半径为
,体积为
,“
”是“
”的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a17fffce4bc0b747bdc07456ea59d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6403b7c0815f897422bed5f1b5677dc1.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次