Question

Найти производную
y=tg^2 x - ctg(x^2)

Answer 1

$y=tg^2 x - ctg(x^2)\\ y'=2tg\ x\ \cdot \frac{1}{cos^2x}+\frac{1}{sin^2(x^2)}\cdot 2x= \frac{2tg\ x}{cos^2x}+\frac{2x}{sin^2(x^2)}$