Question

2x+3/tg(x) производная

Answer 1

$f(x) = 2x + \frac{3}{ \tan(x) } = 2x + 3 \ctg(x) \\ f'(x) = (2x)' + (3 \ctg(x))' = 2 - \frac{3}{ \sin {}^{2} (x) }$