Question

Помогите найти производную​

Answer 1

Ответ:

$y' = 4 {ctg}^{3} ( \frac{x}{4} ) \times ( - \frac{1}{ {sin}^{2}( \frac{x}{4}) } ) \times \frac{1}{4} = - \frac{ {ctg}^{3} ( \frac{x}{4} )}{ {sin}^{2} ( \frac{x}{4} )}$