已知log5 3=a,lOg5 2=b,求log25 12的值.
已知log5为底3的对数=a,log5为底2的对数=b,求log25为底12的对数的值
已知log5 (3)=a,log5(4)=b ,用a,b表示log5(24)
log10是什么?log 75 - log 3 + log 4=log25+log3-log3+2log2=2log5+
已知log4(27)=a,log5(2)=b,求lg2及lg3
(log4 3+log8 3)(log3 5+log9 5)(log5 2+log25 2)=
(log5根号2*log49 81)/(log25 1/3*log7 4开3次方)=?
(log5根号2*log49^81)/(log25^(1/3)*log7^立方根4)
(log2^5+log4^0.2)(log5^2+log25^0.25)化简
若10的a次方等于2,10的b次方等于3,则用a,b表示log5 12=?
log4(log5 a)=log3(log5 b)=1,求a/b.
设a=log5(4),b={log5(3)}^2,c=log4(5),则abc的大小关系是?要详解
a=log5(4),b=[log5(3)]²,c=log4(5),比较abc的大小