A Level

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

Problem

Calculate ddx[x2sin⁡(3x)]\dfrac{d}{dx}\bigl[x^{2}\sin(3x)\bigr]. (a) 2xsin⁡(3x)−3x2cos⁡(3x)2x\sin(3x)-3x^{2}\cos(3x) (b) 2xsin⁡(3x)+3x2cos⁡(3x)2x\sin(3x)+3x^{2}\cos(3x) (c) 2xsin⁡(3x)+3xcos⁡(3x)2x\sin(3x)+3x\cos(3x) (d) 2xsin⁡(3x)+x2cos⁡(3x)2x\sin(3x)+x^{2}\cos(3x)

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