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 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(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, 已知log（2）[log（3)(log(4) x)] = log(3) [log(4) (log(2) y)]=0,求x+y的值 函数y=log(1/2)2x+log(1/3)x的单调区间为 若log底数2[log底数3(log底数4)]若log底数2[log底数3(log底数4（x）)]=log底数3[log底数4(log底数2(y))]=log底数4[log底数2(log底数3z)]=0,则x+y+z= 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(9)x+log(x^2)3=1的解为?原方程可可化为log(3 ²)x+log(x)²3=1 ,∴1/2*log(3)X+1/2*log(x)3=1,∴[log(3)x]²-2log(x)3+1=0,即[log(3)x-1]²=0请问这里的[log(3)x]²-2log(x)3+1=0是怎么推出来的,刚学基础不好, [log(4)(2x)][log(2x)(3y)][log(3y)(z)]=log(8x)[(8x)]^2,则z=? 已知0＜a＜1,x=log a 根号2＋log a 根号3y=1/2 log a 5z=log a 根号21 －log a 根号3比较x y z 的大小关系x=log a （根号2）＋log a （根号3）y=1/2 （log a 5）z=log a （根号21） －log a （根号3） log 3 (4+x+4y)^2=0 联立 log 2 (x+1)^2=1+3log 2 y^2 求 可以说log a x +log a y=log a 2log(m)y-log(m)x-log(m)z 若-3≤log(1/2)x≤-1/2,则函数y=(log(2)x－1)(log(2)x－2)的值域为? 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 函数y=f(x)=log(1/2)2x+log(1/3)x的单调递减区间 log(4)y+log(2y)=9怎么解 log(2)(25)×log(3)(1/16)×log(5)(1/9)=? log（x+5）=log（x）+log（2） log（8）+log（x）=log（24） 2log（x）=log(2x)+log(3)