求 c/a + c/b 的值
回答 (1)
2011-02-11 6:55 am
✔ 最佳答案
Let 2^a = 3^b = 6^c = k :alog2 = blog3 = clog6 = logka = logk / log2b = logk / log3c = logk / log6Soc/a + c/b= (logk / log6) / (logk / log2) + (logk / log6) / (logk / log3)= log2 / log6 + log3 / log6= log(2*3) / log6= 1
收錄日期: 2021-04-21 22:19:41
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110210000051KK01876