For the function

MATHEMATICS · Single correct · CBSE · Mathematics · Continuity and Differentiability · Continuity and Differentiability

Problem

For the function y=arccos⁡(3x)y=\arccos(3x), at which of the following xx-values does the tangent line have slope −4-4? (a) x=1512x=\dfrac{\sqrt{15}}{12} (b) x=712x=\dfrac{\sqrt{7}}{12} (c) x=79x=\dfrac{\sqrt{7}}{9} (d) x=16x=\dfrac16

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