Let . Determine…

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

Problem

Let f(x)=tan⁡(3x)f(x)=\tan(3x). Determine f′(x)f'(x). (a) 3tan⁡(3x)sec⁡(3x)3\tan(3x)\sec(3x) (b) 9sec⁡2(3x)9\sec^{2}(3x) (c) 3sec⁡2(3x)3\sec^{2}(3x) (d) sec⁡2(3x)\sec^{2}(3x)

Related theory

Browse the problem library