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For h(ac) 2ac sin(ac) , find h (x ). ON h'() 2sin 2 sin (a) -2x cos(x) cos' (x) ( B) h' (x ) 2 sin (x) -2x cos (x) sin? (x) Och'(x) 2 cos(x) - 2x cos (x) sin (a) D) h'() = 2 sin (x ) - 2x sin (x) sin (x)