log3 7·log2 9·log49 a=log4 1/2,则a=
log3 7·log2 9·log49 a=log4 1/2,则a=
若log3(7)·log2(9)·log49(a)=log4(1/2),则a的值等于
log2(log3(log4的对数a))=log3(log4(log2的对数b))则a/b的值为?
若a=log2 3,b=log3 2,c=log4 6比较大小
已知log3^2=a则log2^9等于多少
一道数学题log2=a,log3=b.那么log4/15等于?
已知log2^3=a则log4^9=
若log2(log3(log4x)=log3(log4(log2y)=log4(log2(log3z)=0则x+y-z=
log2(3)=a,log3(7)=b.log12(56)=log3(7*8)=log3(7)+3log3(2)
log2^(log3^x)=log3^(log4^y)=0则x+y=
log2(3)*log3(4)*log4(5)*.log(k+1)(k+2)=log2(k+2) 怎么证
log3[log4(log5a)]=log4[log3(log5b)]=0求a/b等于几?