1 . 若命题:“存在整数
使不等式
成立”是假命题,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d55dea919ecebd14f0f65e40d191972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 现给定两个命题:命题
对任意的
,都存在
,使得
;
命题
存在
,对任意的
,都有
.则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aff8d9b6533ff319420cdc5e8740b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d243800e6de7c517267e9225f808266e.png)
命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aff8d9b6533ff319420cdc5e8740b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d243800e6de7c517267e9225f808266e.png)
A.命题![]() | B.命题![]() |
C.命题![]() ![]() | D.命题![]() ![]() |
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3 . 设实数
.给出如下两个命题,则( ).
①存在x使得
,
,
,
按某种顺序可组成等差数列;
②存在x使得
,
,
,
按某种顺序可组成等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77ce9ca93a0634c6302d116bf36439c.png)
①存在x使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48345d239aaf8e9ca1ff2846c08a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66db91bb3be9e2b6ad567774e3699758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c5a05a11f731194a845e68a0479ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada1a099b4cb4863ef1a94927c221ff8.png)
②存在x使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48345d239aaf8e9ca1ff2846c08a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66db91bb3be9e2b6ad567774e3699758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c5a05a11f731194a845e68a0479ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada1a099b4cb4863ef1a94927c221ff8.png)
A.①真②真 | B.①真②假 | C.①假②真 | D.①假②假 |
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4 . 若函数
为非奇非偶函数,则有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/208836dfd77253efa91e9956d0d769a7.png)
A.对于任意的![]() ![]() ![]() |
B.存在![]() ![]() ![]() |
C.存在![]() ![]() ![]() |
D.对于任意的![]() ![]() ![]() |
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