化简:1/log(3)x 1/log(4)x 1/log(5)x=……(答案是1/log(60)x

化简:1/log(3)x 1/log(4)x 1/log(5)x=……(答案是1/log(60)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 1/log（2）x+1/log（3）x+1/log（4）x=1,x=? 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 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 关于log的题如果log(x)+log(x+3)=1那么x等于多少? log(1/8)X log(1/2) (x+1)>log(1/4) (3x+4)求对数不等式 化简2log`5(10)+log`3(0.25）+log`1/5(125)=(2) log`2(根号2）+log`9(27）+（1/4)^log`4(1/16) 注意 `为下角标 log的数学题2 + log 2（为底）4= 3x-1 对数:log(4)8－log(1/9)3 求值 (log(2)9+log(4)1/9)乘以(log(3)2+log(9)0.5) 括号里是底数.计算这道题. 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, log(1/2)3,log(1/3)3,log(1/4)3比大小 2^log(4)(3)加3^log(9)(1/4)加5^log(1/25)(2) log∨6 (64)*log∨4 (1/27)*log∨3( 36) log∨6 (64)*log∨4 (1/27)*log∨3( 36) 1、若lg2=a,lg3=b,则lg√15=?（用a、b表达）2、若log(15)(5)=m,则log(15)(3)=(用m表示)3、log(2)(3)*log(3)(4)*log(4)(5)*log(5)(6)*log(6)(7)*log(7)(8）=?4、设log(3)(2)=log(2)(3^x),x=?这个对数函数我学的很不好,所以希望过