呢個log數點計??????急急急!!!!HELP!
2011-01-07 4:38 am
圖片參考：http://imgcld.yimg.com/8/n/HA00051509/o/701101060116913873437050.jpg
=????????
STEPS PLEASE!!
THX=]
回答 (1)
2011-01-07 4:50 am
✔ 最佳答案
log25 9 x log27 5= log9 / log25 x log5 / log27= log3² / log5² x log5 / log3³= 2log3 / 2log5 x log5 / 3log3= 2log3 log5 / (2log5 3log3)= 2 / (2 x 3)= 1/3
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https://hk.answers.yahoo.com/question/index?qid=20110106000051KK01169