If (f(x)=2x^ 3 - 4 x^ 2 )

MATHEMATICS · Single correct · CBSE · Mathematics · Continuity and Differentiability · Continuity and Differentiability

Problem

If f(x)=2x3−4x2f(x)=2x^{3}-\dfrac{4}{x^{2}}, then f′(x)f'(x) equals (a) 6x2−8x36x^{2}-\dfrac{8}{x^{3}} (b) 6x2+8x26x^{2}+\dfrac{8}{x^{2}} (c) 6x2+8x36x^{2}+\dfrac{8}{x^{3}} (d) 6x2+4x36x^{2}+\dfrac{4}{x^{3}}

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