A Level

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

Problem

ddx[log⁡(x+1x)]=\frac{d}{dx} \left[\log \left(x + \frac{1}{x}\right)\right] = (a) (x+1x)\left(x + \frac{1}{x}\right) (b) (1+1x2)(1+1x)\frac{\left(1 + \frac{1}{x^2}\right)}{\left(1 + \frac{1}{x}\right)} (c) (1−1x2)(x+1x)\frac{\left(1 - \frac{1}{x^2}\right)}{\left(x + \frac{1}{x}\right)} (d) (1+1x)\left(1 + \frac{1}{x}\right)

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