a=log(0.7)0.8 b=log(0.7)0.9 c=log(0.7)1.1 比较大小

a=log(0.7)0.8 b=log(0.7)0.9 c=log(0.7)1.1 比较大小 log(a)(b)=log(c)(b) /log(c)(a) 怎么证log(a)(b)=log(c)(b) /log(c)(a)怎么证 公式：log(a)(b)*log(b)(a)=? 求证 log(a)^(b)=1/log(b)^(a)求证 log(a)^(b)=1/log(b)^(a) matlab中合并对数?如何实现log(a)-log(b)=log(a/b) 证明log^a+log^b=log^(a+b)要过程 log(a)b=log(c)b/log(c)a 是怎么推算来的 2log(b)x=log(a)x+log(c)x求证,c^2=(ac)^[log(a)b] log(a)*log(b)=啥啊,忘记公式了啊 别告诉我等于log(b)*log(a) a=log(3)π b=log(7)6 c=log(2)0.8 哪一个大, 可以说log a x +log a y=log a 对数函数题 log a - log b = 3 log (c/2) 求 a = ______________ log(2)5=a,log(2)7=b用ab表示log(35)28 log a b*log b c=log b b*log a c成立吗中间的字母是写在下面的 相当于log的脚码 log(a)M+log(a)N=? 怎样判断a=log(0.7)0.8,b=log(1.1)0.9,c=1.1^(0.9)的大小? log(8)a+log(4)b^2=5,log(8)b+log(4)a^2=7,求log(2)ab的值 设a>b>1,log(a)b+log(b)a=10/3,则log(a)b-log(b)a=