Question

производная tg^3(2-3х)

Answer 1

(tg²(3-2x))`=(tg³(2-3x)*(tg(2-3x))`*(2-3x)`=
=3tg²(2-3x)*1/cos²(2-3x)*(-3)=-9tg²(2-3x)/cos²(2-3x)