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If f(x) =(p-x^n)^(1/n) ,p >0 and n is a ...

If `f(x) =(p-x^n)^(1/n)` ,`p >0` and` n` is a positive integer then `f[f(x)]` is equal to

A

x

B

`x^(n)`

C

`p^(1//n)`

D

`p-x^(n)`

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