若
,
,则下列判断①
,②
,③存在
,使
,④存在
,使
;也存在
,使
中,正确的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6eec7d75a66a4407631f75320bb8b15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd08434ba3d0a0d162a7ffaf593998a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4118df6374966db0ef68716dfa9a13e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e67796c688457d65ce0af594ca476b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ecf39ce99b3fad69512154416deb39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4118df6374966db0ef68716dfa9a13e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e67796c688457d65ce0af594ca476b.png)
2018高三·全国·竞赛 查看更多[1]
更新时间:2018-12-27 23:07:55
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【知识点】 三角恒等式、不等式、最值