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(文)设f(x)=x5-5x4+10x3-10x2+5x+1,则f(x)的反函数f-1(x...
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(文)设f(x)=x
5-5x
4+10x
3-10x
2+5x+1,则f(x)的反函数f
-1(x)为( )
A.
B.
C.
D.
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