已知log3(x-2y)+log3(x+2y)=1+log3x+log3y,求log2x-log2y的值

log3x+log3y=2log3(x-2y),求log2x/y的值 已知2x+3y+6z不等于1,求证1/x + 1/ 已知log2[log4(log3x)]=log3[log5(log2y)]=0,求4更号x-y^1/5 log2[log3(log4x)]=log3[log4(log2y)]=0求x+y的值, 已知x满足（log3x）^2-log3 x-2≤0,求函数y=f(x)=log3 3x·log3 9x的值域 已知log2[log3(log4x)]=log3[log4(log2y)]=0,求x+y 函数y=log2x+1/log3(3x-2)的定义域为 一道高一对数题...试写出一组实数x,y,使log3x-log3Y=log3(x-y)成立,则X=?Y=? 求函数y=(log3 x)^2+(2log3 x)+1的定义域和值域. 已知函数y=(log3 x)²-2log3 x+3的定义域为[1,9],求函数的值域? 已知log2(log3(log4x))=0,且log4(log2y)=1.求根号x*y^3/4的值在线等啊. 设x,y都是正整数,且log3(x+y)=log3 x+log3 y,求x^y的值 log4[log3(log2x)]=0,求x^-1/2