Question

Помогите найти производную

Answer 1

y'=(cos(tg1/3))/15*(sin²15x/cos30x)'=

cos(tg1/3)/15*(1-cos30x)/(2cos30x))'=
cos(tg1/3)/30*(1/cos30x)'=
cos(tg1/3)/30*(-1)/cos²30x*30=
cos(tg1/3)*sin30x/cos²30x