Mathematics
Senior High
Solved
この計算で、-からプラスになる理由が分からないです。
印つけてる所
解説お願いします。
別解
(2) logs 15×1ogs15-(logs5+1ogs3)
(4) log
=logs(3×5)×logs (3×5)-(loga5+logs 3)
1
=(logs5+1)(logs3+1)Q(loga5+log53)
よ
log33
=logs5×1ogs3+1=log35×
logs5
71ao. 13」(1am 2)3」21am 2vlam.?
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