Question 7 Find dy/dx. y = x$ sec (–) (A x3 sin 5x cos x + x² sin² 5x () B -x3 sec + 5x4 tan sec (c) x3 sec + 5x4 sec x³ sin 5x cos x + 3x sin2 5x

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A: Given: X~N(50,10)

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