1.71 3) {-1<x≤2,
{-5≤y<-1;

4) {y-2x+4≥0,
{3y-9x+6<0.

1.74

2) {x^2+y^2≤25,
{y≥5-x;

3) {4≤x^2+y^2≤16,
{x≤y.​

ятебемогупомоч    3   11.10.2020 23:45    2