log a b=log b a,则：ab=?

log a b=log b a,则：ab=? log(ab)=log(a)+ log(b)吗 log a b*log b c=log b b*log a c成立吗 已知 log (a) ab=1/p ,则 log (ab) a/b=__ __. log(8)a+log(4)b^2=5,log(8)b+log(4)a^2=7,求log(2)ab的值 公式：log(a)(b)*log(b)(a)=? 设a>b>1,log(a)b+log(b)a=10/3,则log(a)b-log(b)a= 利用换底公式证明：log(a)b.log(b)c.log(c)a=1 证明log^a+log^b=log^(a+b)要过程 log(a)(b)=log(c)(b) /log(c)(a) 怎么证 已知log（14）7=a log(14)5=b 用ab表示log(35)70= 设log(18)(9)=a log(18)(5)=b ,用ab表示log(36)(45)