Question

Помогите пожалуйста
Даю 40 баллов

Answer 1

$1)\; \; f(x)=\left\{\begin{array}{l}\frac{5}{x}\; ,\; x\leq -1\; ,\\x^2\; ,\; \; -1<x\leq 1\; .\end{array}\right\\\\\\0\in (-1\, ;\, 1\, \, ]\; :\; \; f(0)=x^2\Big|_{x=0}=0^2=0$

$2)\; \; f(x)=\left\{\begin{array}{ccc}-x^2\; ,\; x<0\; ,\\\sqrt{x}\; ,\; x\geq 0\; .\end{array}\right\\\\\\(-1)\in (-\infty ;0)\; :\; \; f(-1)=-x^2\Big|_{x=-1}=-(-1)^2=-(+1)=-1$