log既prove
回答 (2)
2011-03-19 5:58 am
✔ 最佳答案
If y = log x, then x = 10^y by definition.So L.H.S.
= 10^(log x)
= 10^y
= x
= R.H.S.
2011-03-20 5:04 am
let y=10^(log x)
log y =log (10^(log x))
log y =log x log 10 by difination log 10 =1
log y = log x
since log function is injective function
therefore y=x
i.e. x=10^(log x)
log y =log (10^(log x))
log y =log x log 10 by difination log 10 =1
log y = log x
since log function is injective function
therefore y=x
i.e. x=10^(log x)
收錄日期: 2021-04-13 17:53:01
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110318000051KK01157