log(4)y+log(2y)=9怎么解

log(4)y+log(2y)=9怎么解 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 已知log（2）[log（3)(log(4) x)] = log(3) [log(4) (log(2) y)]=0,求x+y的值 log底数3[log底数4(log底数2y)]=0等于多少? 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= 怎么画出y=log|x+2|和y=log|x|的图像 数学y=log(3)x+4log(x)3怎么化成y=log(3)x+4/log(3)x? 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, 函数y=log log(27)32 × log(64)27+log(9)2 × log(4)根号27=?log(27)32 × log(64)27+log(9)2 × log(4)根号27=? [log(4)(2x)][log(2x)(3y)][log(3y)(z)]=log(8x)[(8x)]^2,则z=? 可以说log a x +log a y=log a 2log(m)y-log(m)x-log(m)z (log(4)3+log(8)3)(log(3)2+log(9)2) 怎么个思路 (log(4)3+log(8)3)(log(3)2+log(9)8) 怎么个思路 matlab 极小化函数f（x,y) = -9*y - 10*z + 100*(-1*log(100-y-z)) - log(y) - log(z) - log(50-y+z)matlab怎么极小化这个函数,我搞的老是出错 y=log(4,x^(1/2)) + log(4,2) 的反函数 求等式log(2)3*log(3)4*log（4)5*log(5)6*log(6)7*log(7)m=log(3)9时m的值?