найти производную. y=tg^3(2-3x)
y = tg³(2-3x)
y' = 3 tg²(2-3x) (tg(2-3x))' = 3 tg²(2-3x) (2-3x)' / cos²(2-3x) = -9 tg²(2-3x) / cos²(2-3x)