Question

найти производную ctg^3 6x​

Answer 1

Ответ:

$( {ctg}^{3} (6x)) '= 3 {ctg}^{2} (6x) \times (ctg(6x))' \times (6x)' = \\ = 3 {ctg}^{2} (6x) \times ( - \frac{1}{ \sin {}^{2} (6x) } ) \times 6 = \\ = - \frac{18 {ctg}^{2} (6x)}{ \sin {}^{2} (6x) }$