A Level

MATHEMATICS · Single correct · A Level · Mathematics · Differentiation · Differentiation

Problem

If f(x)=3x2−4cos⁡xf(x)=3x^{2}-4\cos x, find f′(π/2)f'(\pi/2). (a) 3π−43\pi-4 (b) 3π2+4\dfrac{3\pi}{2}+4 (c) 3π+43\pi+4 (d) 3π3\pi

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