2log^2(1／2)X+5log(1／2)X-3＜0,求函数f(x)=[㏒(2)X／8]·[㏒^(1／2）4／X]的值域.

log(X+5)+log(X+2)=1 log根号2（X-1) log(0.1)log(0.2)log(0.5)(1/根号5次2）=x,求x的值 计算：1/[log(2)3]+1/[log(5)3]=? log（x+5）=log（x）+log（2） log（8）+log（x）=log（24） 2log（x）=log(2x)+log(3) 解不等式log(0.5)(x2-5x-6)＞log(2)(1/2(x+6)) log以5为底（3x-2)>log以5为底（x+1) 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? 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(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, 2^log(4)(3)加3^log(9)(1/4)加5^log(1/25)(2) log(2)1/25乘以log(3)1/8乘以log(5)1/9 log(2)(25)×log(3)(1/16)×log(5)(1/9)=? 2log(m)y-log(m)x-log(m)z 1/log（2）x+1/log（3）x+1/log（4）x=1,x=? log(5)35+2log(1/2)根号2-log（5）1/50-log(5)14 括号里的为log的底数 计算：（1） log(2)(3)*log(3)(4)*log(4)(5)（2）log(2)(7)*log(√7)(8) 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