If log 2=x and log3=y, expression the following in term of x and y:
1. log(5/27)^1/2
Solve for x:
1. 3 ^(x+3) - 2 [3^(x+2)]=30 - 3^x
2. 3^(x+1) - 2^(y+1)=1
4(3^x) +3( 2^y)=24
(P.S. no. 2 is simutaneous equations)
求救...數學,,logarithm
2010-10-23 4:57 pm
回答 (2)
2010-10-23 5:33 pm
✔ 最佳答案
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2010-10-23 09:33:20 補充：
http://img517.imageshack.us/img517/1311/39031830.png
2010-10-23 5:21 pm
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https://hk.answers.yahoo.com/question/index?qid=20101023000051KK01875