解题方法
1 . 已知函数
.给出下列四个结论:
①
的最小正周期是
;
②
的一条对称轴方程为
;
③若函数
在区间
上有5个零点,从小到大依次记为
,则
;
④存在实数a,使得对任意
,都存在
且
,满足
.
其中所有正确结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0770c2366b3fe0204bfe30f8ad500c4b.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c63e1c64c42b7f3b7fdc396d4756cab.png)
③若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74f8a5341d33c236bebd155a7d5ee5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f98d2ddce01e8a8861442e990d3830e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195f9cb9c1ca84756dd98afdc784ead9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac967402e4942374116ebdfacc8c787.png)
④存在实数a,使得对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa88b7cf3e4e6e217e4e0c5f43c39207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b712906f87b919b42fb05ed7eb3189b3.png)
其中所有正确结论的序号是
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2023-04-25更新
|
1499次组卷
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3卷引用:北京市丰台区2023届高三二模数学试题