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If f(x) is a polynomial function such th...

If `f(x)` is a polynomial function such that `f(x)f((1)/(x))=f(x)+f((1)/(x))` and `f(3)=-242`, then `f(x)`=

A

`x^(5)-1`

B

`-x^(5)-1`

C

`-x^(5)+1`

D

`1+x^(5)`

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