(4-x)^(1/2)+log(1/2)x的值域

1/log（2）x+1/log（3）x+1/log（4）x=1,x=? 试解关于x的不等式log(2)x+4log(3)x+12log(8)x+n·2^(n-1)·log(2^n)x 对数计算1.{log(4)（3）+ log(8) (3)} X {log(3)(2)+log(9)(2)}2.{log(2)(3)} X {log(3)(4)+log(9)(2)}3.(lg2)^+1g2X 1g5 +1g50 log(X+5)+log(X+2)=1 log 9 X/Y=1/2(log 3 X - log 3 Y) log 9 X/Y=1/4 3log 3 X =2log 3 Y find X and Y log根号2（X-1) 已知log a x=2,log b x=1,log c x=4,求log abc x 的值 已知log(a)x=1,log(b)x=2,log(c)x=4,则log(abc)x=? 于是f(x)=9[log(4,x)]^2-[log(2,x)]^2=9[1/2*log(2,x)]^2-[log(2,x)]^2=5/4*[log(2,x)]^2 怎么得的? log(1/2) (x+1)>log(1/4) (3x+4)求对数不等式 不等式log(1/4)^X >log(1/2)^(x+1)的解集是? 解对数函数的不等式.2log a (√（4-x））-log (√a）2≥2log a （x-1）注：log a x.是log以a为底x的对数. lg(7*2^x+8)>=log(√10) 2^x,求函数f(x)=log(1/2)x*log(1/2)x/4的最小值 log(2x)+log(3y)-log(2z) 怎么化简?log3(x^2-2x-6)=2 log(3x+6)=1+log(x)求解,求每步详...log(2x)+log(3y)-log(2z) 怎么化简?log3(x^2-2x-6)=2 log(3x+6)=1+log(x)求解, y=log(4,x^(1/2)) + log(4,2) 的反函数 log的数学题2 + log 2（为底）4= 3x-1 对数不等式：log(1/2) (4x^2-x)>1 (4-x)^(1/2)+log(1/2)x的值域