不等式(1/2)^log3 (log1/5(x^2-4/5)<1的解集为
问题描述:
不等式(1/2)^log3 (log1/5(x^2-4/5)<1的解集为
答
(1/2)^log3 (log1/5(x^2-4/5)<1log3 (log1/5(x^2-4/5)>0 log1/5(x^2-4/5) >1 0<x^2-4/5 <1/5 4/5<x<1 2根号5/5<x<1 或-1<x<-2根号5/5