名校
解题方法
1 . 以下说法正确的是__________ .(填写所有正确命题的序号)
①不等式
与不等式
解集相同;
②已知命题
“若
,则
”的否命题是“若
,则
” ,命题
“若
,则
”与命题“若
,则
”等价,则
为真命题,
为假命题;
③命题“
”的否定是“
”;
④已知幂函数
的图像经过点
,则
.
①不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27297168fdce1d8f693e109756624c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9f0b7f81593c3e13cd5d87ee7becbc2.png)
②已知命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3019b662e5dc2750bb6f9199d3250f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eae9ba258299eb489b490594397e23c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582ad43edf388c096e7704d92340bf75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5286186cb58bf265a2a96e5195d88d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab92728b35ed5798e07a2b0095bfcc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a27dd329517f0dd8f1d0dfade6138ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
③命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77df73ed0742e53f78c7428cafb39a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92e20b0a87fd4fbd07afe36c789cfbb.png)
④已知幂函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6688db018aad27e14e7bba19f324dca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c85fb724bbf86c57ef582dddf2b1abdb.png)
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