Question

Найти производную y'(x) функции y=(4x-1)ctg3x

Answer 1

у'(х) = (4х - 1)' * ctg 3x + (4x - 1) * (ctg 3x)' = 4ctg 3x + (4x - 1) * (-1)/sin²(3x) * 3 = 4ctg 3x - 3(4x - 1)/sin²(3x)