Найдем производную функции y = ln (sin ^ 3 (5 * x)).y = (ln (sin ^ 3 (5 * x))) \' = 1/sin ^ 3 (5 * x) * (sin ^ 3 (5 * x)) \' = 1/sin ^ 3 (5 * x) * 3 * sin ^ 2 (5 * x) * (sin (5 * x)) \' = 1/sin ^ 3 (5 * x) * 3 * sin ^ 2 (5 * x) * cos (5 * x) * (5 * x) \' = 5/sin ^ 3 (5 * x) * 3 * sin ^ 2 (5 * x) * cos (5 * x) * (x) \' = 5/sin ^ 3 (5 * x) * 3 * sin ^ 2 (5 * x) * cos (5 * x);То есть получили: y = 5/sin ^ 3 (5 * x) * 3 * sin ^ 2 (5 * x) * cos (5 * x).