A calculus problem by Nathan Laurence

Calculus Level 2

If the d y d x \dfrac{dy}{dx} of cos ⁡ 3 x \cos 3x can be expressed in the form of k sin ⁡ 3 x k \sin 3x , solve for the value of k k .


The answer is -3.

Nathan Laurence by Nathan Laurence , 19, Indonesia

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1 solution

Nathan Laurence
Nov 18, 2016

Differentiation of C o s x = − S i n x Cos x = - Sin x

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