log4 243 - log8 729=?log4 12 - log2 6=?
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log4 243 - log8 729=?log4 12 - log2 6=?
log4 243 - log8 729=?log4 12 - log2 6=?
log4 243 - log8 729=?log4 12 - log2 6=?
=lg243/lg4-lg729/lg8
=5lg3/2lg2-6lg3/3lg2
=5lg3/2lg2-4lg3/2lg2
=lg3/lg4
=log4(3)
原式=lg12/lg4-lg6/lg2
=(2lg2+lg3)/2lg2-(lg3+lg2)/lg2
=-lg3/lg4
=log4(1/3)
log4 243 - log8 729=?log4 12 - log2 6=?
log4 8-log8 4=?
log4 2+log8 2=多少?
log4(3)-log4(12)-log8(4) =log4(3/12)- log8( 8^(2/3) ) log8( 8^(2/3) )怎么得出来的?
计算:(log4 3+log8 3)×log9 √2=?
已知1/2log8(a)+log4(b)=5/2,log8(b)+log4(a^2)=7,则ab=
(log4(3)+log8(3))*(log3(2)+log8(2))-log1/2(^4√32)=?..
log3(4)·log4(8)·log8(m)=log4(16)则m=
设log3(4)*log4(8)*log8(m)=log4(16)那么m等于~
若log3 4*log4 8*log8 m=log4 16求m
已知已知log8(a)+log4(b^2)=5,log8(b)+log4(a^2)=7,求log4(根号下ab)
已知½log8(a)+log4(b)=5/2,log8(b)+log4(a^2)=7 求ab的值
log3 4*log4 8*log8 m=log4 16,则m为[ ]其中3、4、8、4为底数.
log3^4乘log4^8乘log8^m=log4^2麻烦过程写清楚一点.谢谢、
若log3(4)×log4(8)×log8(m)=log4(16).则m等于?谢谢
log3 4×log4 8×log8 a=log根号3 9,则a=
log3 4*log4 8*log8 7*log7 m=1og3 18 求M 等于多少.
【(log4)^3+.(log8)^3】【.(log3)^2+.(log9)^2】=几啊