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下列四个函数中,与y=x表示同一函数的是( ) A.y=()2 B.y= C.y...
下列四个函数中,与y=x表示同一函数的是( )
A.y=(
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)
2B.y=
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C.y=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231417543551764/SYS201311012314175435517002_ST/2.png)
D.y=
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若集合A={0,1,2,3},B={1,2,4},则集合A∪B=( )
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+c(a>0)的图象在点(1,f(1))处的切线方程为y=x-1.
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