log2(50)-2log2(5)
log2 3/log2 5等于log2 3-log2 5么?
log2 5/4+log2 5
log2(20)-log2(5)+2log3(2)×log4(3)
根号下{[log2 (5)]^2-4log2(5)+4}+log2(1/5)
log2底根号5/56+log2(14)-1/2log2(35)
log2 3乘以log2 3等于2log2
log2 SQR(7/48)+log2 12 -1/2log2 48
(log2 9)/(log2 8) = 2/3(log2 3)
log2 SQR(7/48)+log2 12 -1/2log2 42
log的计算 :log2(20)-log4(25)= log3(2)×log2(5)×log5(3)=?log2[log
log2(x-2)=log4(5-x)
log2(3)+log3(5)+log3(2)=?