Question 19 * 19. Differentiate f (x) = 3 ln (2x –1)´ with respect to x . 12 S"(x)=- 2x-1 A S'(x)=: 2.x –1 B 6 f'(x) =- C (2.x–1) 12 S"(x)= ; 2.x –1 D %3D

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