Find the intervals in which the function...

Find the intervals in which the function f given by f(x) `=x^(3) +(1)/(x^(3)) , xne 0` is
(i) increasing (ii) decreasing .

Verified by Experts

The correct Answer is:

(i) `x lt -1 ` and `x gt 1` (ii) `-1 lt x lt 1`

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