Question

Найти производную функции
y=ctg(6x-1)

Answer 1

$y=ctg(6x-1)\\y'=-frac{6}{sin^2(6x-1)}$

Answer 2

$y=ctg(6x-1)\\y`=(ctg(6x-1))`=- frac{(6x-1)`}{sin^2(6x-1)}=- frac{6}{sin^2(6x-1)}$