证明:log(a)bXlog(b)cXlog(c)a=1

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证明:log(a)bXlog(b)cXlog(c)a=1
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证明:log(a)bXlog(b)cXlog(c)a=1
证明:log(a)bXlog(b)cXlog(c)a=1

证明:log(a)bXlog(b)cXlog(c)a=1
log(a)bXlog(b)cXlog(c)a
=lgb/lga*lgc/lgb*lga/lgc
=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·、?

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