Question

срочно................​

Answer 1

Ответ.

$y=\dfrac{arccos(2-x)}{\sqrt{2-x^2}}\\\\\\OOD:\ \ \left\{\begin{array}{l}-1\leq 2-x\leq 1\\2-x^2>0\end{array}\right\ \ \left\{\begin{array}{l}-3\leq -x\leq -1\\(2-x)(2+x)>0\end{array}\right\ \ \left\{\begin{array}{l}1\leq x\leq 3\\(x-2)(x+2)<0\end{array}\right$

$\left\{\begin{array}{l}1\leq x\leq 3\\-2<x<2\end{array}\right\ \ \ \ \Rightarrpw \ \ x\in [\ 1\ ;\ 2\, )$