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Find the values of x for which f(x)= 2x^...

Find the values of x for which `f(x)= 2x^(3)-15x^(2)-144x-7` is
(a) Strictly increasing (b) strictly decreasing

Text Solution

Verified by Experts

The correct Answer is:
(i) `x in (-oo, -3)uu (8, oo)` (ii) `x in (-3, 8)`
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