log(8)a+log(4)b^2=5,log(8)b+log(4)a^2=7,求log(2)ab的值
log(8)a+log(4)b^2=5,log(8)b+log(4)a^2=7,求log(2)ab的值
若log(2)4·log(4)8·log(8)m=log(4)16,求m的值
计算题(log)已知log底数5 ^2=a,log底数5 ^3=b求log底数5根号54 的值
log(ab)=log(a)+ log(b)吗
对数函数题 log a - log b = 3 log (c/2) 求 a = ______________
log(3)4*log(4)8*log(8)M =log(2)16 M是多少
(log(2)125+log(2)25+log(8)5)*(log(125)2+log(25)4+log(5)8)
已知log(3)2=a log(5)2=b用ab表示log(30)90
已知lg2=a lg3=b 求log(4)12+log(2)15=
2log(b)x=log(a)x+log(c)x
有关对数的计算题(log(4)3+log(8)3)(log(3)2+log(9)2)=?
[log (底数为a) x]=[1\2log (底数为a) b ] - [ log (底数为a)c]求X