Question

Помогите решить
log↓1/3 (x²-1) / log↓0,3 5 ≤0

Answer 1

ОДз
(x-1)(x+1)>0⇒x<-1 U x>1
log(0,3)5<0⇒log(1/3)(x²-1)≥0
x²-1≤1
x²-2≤0
(x-√2)(x+√2)≤0
-√2≤x≤√2
x∞[-√2;-1) U (1;√2]