函数f(x)=根号下x^2-2x-3/log2(x-1)的定义域为

问题描述:

函数f(x)=根号下x^2-2x-3/log2(x-1)的定义域为

1﹚f(x)=√[x²-2x-3/log2(x-1)]还是2﹚f(x)=﹙√x²-2x-3﹚/log2(x-1)若是1﹚则x²-2x-3>0 log2(x-1)>0或x²-2x-3<0 log2(x-1)<0且log2(x-1)≠0∴x>3或x<-1 x>2 或-1<x<3 1 < x<2 且x≠...