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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) =-80` then `f(x)=`

A

`x^(4) + 1/x^(4)`

B

`x^(4) -1/x^(4)`

C

`1/x^(4) -x^(4)`

D

`-1/x^(4) -x^(4)`

Text Solution

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The correct Answer is:
C
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