Question

Ctg(2/x) * arccos√2
Производная​

Answer 1

$2=const\; ,\; \sqrt2=const\; ,\; \; arccos\sqrt2=const\; ,\; \; (const)'=0\\\\\\y=ctg\frac{2}{x}\cdot arccos\sqrt2\\\\y'=arccos\sqrt2\cdot \frac{-1}{sin^2\frac{2}{x}}\cdot \frac{-2\cdot 1}{x^2}=\frac{2\cdot arccos\sqrt2}{x^2\cdot sin^2\frac{2}{x}}$