已知x>y>0,log3(x-y/2)^2=log3(xy),则log3(根号x/y-根号2）

已知x>y>0,log3(x-y/2)^2=log3(xy),则log3(根号x/y-根号2） 已知x>y>0,log3(x-y/2)^2=log3(xy),则log3(根号x/y-根号2)多少 已知x>y>0,log3(x-y/2)^2=log3(xy),则log3(根号x/y-根号2) 求全过程紧急求啊 已知2log3[(x—y) / 2]=log3(xy),则x / y=_________. 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x满足（log3x）^2-log3 x-2≤0,求函数y=f(x)=log3 3x·log3 9x的值域.3Q 已知log2[log3(log4x)]=log3[log4(log2y)]=0,求x+y 已知log2(log3(log4x))=log3(log4(log2y))=0,求x+y的值 已知:log2[log3(log4x)]=log3[log4（log2y)]=0 求x+y的值 已知log3(x-2y)+log3(x+2y)=1+log3x+log3y,求log2x-log2y的值 已知x²-2x-8≤0,则函数y=log3(x+3)log3(3x+9)的值域? 设x>3y>0,2log3(x-3y)=log3(3x+y)+log3y,求x/y的值 设x>3y>0,2log3(x-3y)=log3(3x+y)+log3y,求x/y的值 已知函数y=(log3 x)²-2log3 x+3的定义域为[1,9],求函数的值域? log2^(log3^x)=log3^(log4^y)=0则x+y= 说明函数y=log3^(x+2)与函数y=log3^x图像的关系 已知函数y=log3（(mx^2+8x+n)/(x^2+1)的定义域为R,值域为(0 y=log3(9/x)×log3 3x求值域! 设x,y都是正整数,且log3(x+y)=log3 x+log3 y,求x^y的值