f.4 maths logarithmic
回答 (1)
2010-11-25 6:56 am
✔ 最佳答案
log15 (base 5) = r(log3 + log5) / log5 = rlog3 / log5 = r - 1log5 / log3 = 1/(r - 1)log5 (base 3) = 1/(r - 1)
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https://hk.answers.yahoo.com/question/index?qid=20101124000051KK01417