If , then the value of…

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

Problem

If f(x)=sin⁡−1(3x−4x3)f(x)=\sin^{-1}(3x-4x^3), then the value of f′(12)f'\left(\frac{1}{\sqrt{2}}\right) is (1) −3-3 (2) 33 (3) −32-3\sqrt{2} (4) 323\sqrt{2}

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