1) log27
____
log 9 =?
2)log x
______
log √x =?
3) Log √ 27
___
2 =?
4) log 3√8
__________
Log 64 =?
5) 3log4+2log5-log16=?
中四maths(請列程式)
2008-12-01 8:50 pm
回答 (1)
2008-12-01 10:45 pm
✔ 最佳答案
1)log27 / log 9
=log 33 / log 32
=3 log 3 / 2 log 3
=3/2
2)
log x / log √x
=log x / log x1/2
=log x / (1/2 log x)
=2
3)
Log √ 27 / 2
= Log 271/2 / 2
=(1/2 Log 27) / 2
=Log 27 / 4
4)
log 3√8 / Log 64
=log √72 / Log 64
5) 3log4+2log5-log16
=log64 +log25 -log16
=log 1600 -log16
=log 100
=2
參考: 己會考
收錄日期: 2021-04-29 14:30:13
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20081201000051KK00461