Simplify when possible

MATHEMATICS · Subjective · A Level · Mathematics · Differentiation · Differentiation

Problem

Simplify when possible. The answers are in Chapter 19. 3. Find f′(x)f^{\prime}(x) if f(x)=8(x4−4x2)f(x)=8 \sqrt{\left(x^{4}-4 x^{2}\right)}.

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