Question

Б2 номер 2 ,решение

Answer 1

(x²-1)log(1/3)(3-x)≥0
1){3-x>0⇒x<3
{(x-1)(x+1)≥0⇒x≤-1 U x≥1
{log(1/3)(3-x)≥0⇒3-x≤1⇒x≥2
2≤x<3
2){3-x>0⇒x<3
{(x-1)(x+1)≤0⇒-1≤x≤1
{log(1/3)(3-x)≤0⇒3-x≥1⇒x≤2
-1≤x≤1
x∈[-1;1] U [2;3)