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If f(x)= (x^m)^(1/n) ,n in N , is an e...

If `f(x)= (x^m)^(1/n) ,n in N ,` is an even function, then `m` is (a)even integer (b) odd integer (c) any integer (d) `f(x)-e v e ni s not pos s i b l e`

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