1 . 下列说法中,正确的有_________ (把所有正确的序号都填上).
① “
,使
”的否定是“
,使
”;
②函数
的最小正周期是
;
③命题“函数
在
处有极值,则
”的否命题是真命题;
④函数
的零点有2个.
① “
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d12f933c2be0dd765b64095765234df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb6a831b77984c7800fa611c45300e.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d04a3a2f6024189209e70fea1fcd846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
③命题“函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1260c6fa15a4d739a41c5de1533e9e5c.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711cf5d8ea04cfb77f5d64509cd19d95.png)
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2016-12-03更新
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2卷引用:2015届陕西省西安市第一中学高三大练习一文科数学试卷