高一对数和指数方程题目1.方程x^(lgx-3) =1/100 2.对数方程log3(x-1) =log9(x+1) 3.己知实数x,y满足lg(x-y) + lg(x+2y) = lg2 + lgx + lgy,求x/y=
问题描述:
高一对数和指数方程题目
1.方程x^(lgx-3) =1/100
2.对数方程log3(x-1) =log9(x+1)
3.己知实数x,y满足lg(x-y) + lg(x+2y) = lg2 + lgx + lgy,求x/y=
答