Помогите найти производную. пожалуйста ;) y=(x^2+7x-1)log3 x

y = log(3) x (x^2+7 x-1)x log(3) (x^2+7 x-1) = x x^2 log(3)+x (7 x) log(3)+x (-1) log(3):y = log(3) x x^2+7 log(3) x x-log(3) xx×7 x log(3) = x^2×7 log(3):y = log(3) x x^2+7 x^2 log(3)-log(3) xx x^2 log(3) = x^(1+2) log(3):y = x^3 log(3)+7 log(3) x^2-log(3) x1+2 = 3: | y = log(3) x^3+7 log(3) x^2-log(3) x