解方程log(x+1)-log(x-1)=1.

题目

解方程log(x+1)-log(x-1)=1.

答案

本题是考查指数与对数的概念.
log(x+1)-log(x-1)=1
(x+1)/(x-1)=10
x+1 = 10(x-1)
x+1 = 10x-10
9x =11
x=11/9