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圖片參考：http://imgcld.yimg.com/8/n/HA00997022/o/701203310000613873385300.jpg
急!急! Logerithmic Functions 9q4
2012-03-31 8:12 am
回答 (2)
2012-03-31 9:40 am
✔ 最佳答案
as follows:圖片參考：http://imgcld.yimg.com/8/n/HA04937267/o/701203310000613873385311.jpg
圖片參考：http://imgcld.yimg.com/8/n/HA04937267/o/701203310000613873385312.jpg
參考: F4 science student
2012-04-01 1:44 am
(a)
=log81/2log2-log12/log2-log3/log2
=4log3/2log2-(log4+log3+log3)/log2
=(2log3-log4-2log3)/log2
=-2log2/log2
=-2
(b)
=(2log2/log7)[(1/4*log7)/log2]
=2/4
=1/2
(c)
(log9+3log2)/(log24-log(1/3)
=(log9+log8)/log72
=log72/log72
=1
(d)
=log4/log3-(log6/log3)/(log6/log12)
=log4/log3-(log6/log3)[(log4+log3)/log6]
=(log4-log4-log3)/log3
=-1
=log81/2log2-log12/log2-log3/log2
=4log3/2log2-(log4+log3+log3)/log2
=(2log3-log4-2log3)/log2
=-2log2/log2
=-2
(b)
=(2log2/log7)[(1/4*log7)/log2]
=2/4
=1/2
(c)
(log9+3log2)/(log24-log(1/3)
=(log9+log8)/log72
=log72/log72
=1
(d)
=log4/log3-(log6/log3)/(log6/log12)
=log4/log3-(log6/log3)[(log4+log3)/log6]
=(log4-log4-log3)/log3
=-1
收錄日期: 2021-04-13 18:36:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120331000051KK00006