问题标题:
帮忙换底化简下列:logaC*logcA.log23*log34*log45*log52
问题描述:
帮忙换底化简下列:logaC*logcA.log23*log34*log45*log52
成金勇回答:
1、logaC×logcA=logaC×(1/logaC)=1
2、log23×log34×log45×log52
=[1/(log32)]×2log32×[1/(log54)]×log52
=2×[1/2(log52)]×log52
=2×(1/2)
=1
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