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If f(x) is a polynomial function satisfy...

If `f(x)` is a polynomial function satisfying `f(x)dotf(1/x)=f(x)+f(1/x)` and `f(4)=65 ,t h e nfin df(6)dot`

A

AP

B

GP

C

HP

D

None of these

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The correct Answer is:
B
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