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Let f(x)=x^(3)-(1)/(x^3) , then f(x)+f(...

Let `f(x)=x^(3)-(1)/(x^3)` , then `f(x)+f((1)/(x))` is equal to :

A

local maximum at x =0

B

local minimum at x =0

C

point of inflextion at x =0

D

none of these

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The correct Answer is:
B
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