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If f(x)=(a-x^(n))^(1 / n), then f(f(x))=...

If `f(x)=(a-x^(n))^(1 / n)`, then `f(f(x))`=

A

1.x

B

2.a-x

C

3.`x^n`

D

4.`x^(1)/(n)`

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A
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