已知函数
,有下列4个结论:①函数
的图像关于
轴对称;②存在常数
,对任意的实数
,恒有
成立;③对于任意给定的正数
,都存在实数
,使得
;④函数
的图像上存在无数个点,使得该函数在这些点处的切线与
轴平行;其中,所有正确结论的序号为_________ .
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/71afa419beaf40d1a751ac4b6428b593.png?resizew=92)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/f5f16b0d68a34afb8eaaadd3160e57ab.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/d577e5799da64d4da4fb0f48ccb87f1f.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/c050589bd5c140ef9f30c5743038edd1.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/e71c97bf72ff4e2c9a715a5e059cb9bb.png?resizew=14)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/6250dddb53d44b30a9a481e921759949.png?resizew=104)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/44aff5e377104fca82dede642c971b3f.png?resizew=21)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/ccefe25c67814ed385c57687e7ea1d75.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/30082ea7b00e4d7590ea1b0ebf625368.png?resizew=76)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/f5f16b0d68a34afb8eaaadd3160e57ab.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2017/1/31/1619474935947264/1619474936332288/STEM/e71c97bf72ff4e2c9a715a5e059cb9bb.png?resizew=14)
更新时间:2017-02-08 11:32:40
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名校
【推荐2】若函数
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