已知幂函数f(x)的图象经过点
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533986582/SYS201311031024395339865012_ST/0.png)
,则log
2f(4)=
.
考点分析:
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关于函数f(x)=(2x-x
2)e
x,则下列四个结论:
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