If f(x)=(a−xn)1n, where a>0 and n is a positive integer, then f[f(x)]=
f[f(x)]=[a−{f(x)}n]1n=[a−(a−xn)]1n=x
If f(x) = (a−xn)1n , where a>0 and n is a positive interger , then f[f(x)]=