证明:log(a)bXlog(b)cXlog(c)a=1

问题描述:

证明:log(a)bXlog(b)cXlog(c)a=1

loga(b)*logb(c)*logc(a)=(lnb/lna)(lnc/lnb)(lnc/lna)=1

你是高一的吧··?
你说的这道题目很简单啊·
应该是书上P75页的第11题的第二小问吧·、?

log(a)bXlog(b)cXlog(c)a
=lgb/lga*lgc/lgb*lga/lgc
=1