Let f(x) = 2x2 + x – 6
(A) find f'(x)
(b) Find the value of x for which f'(x)=0

(a) f(x) = 4x+1  (b) x = -1/4

Explanation:

Given that,

(a) We need to find f'(x).

(b) We need to find the value of x when f'(x) =0

Put f'(x) = 0

4x+1 = 0

So, the value is -1/4 when f'(x) = 0.

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explanation:

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