Maths Function

3log x - log y
----------------------
(3)(1/3) [(1/3)logy- logx]

3 log x - log y
----------------------
(-1)(3)(1/3) [log x- (1/3)log y]

3 log x - log y
-----------------------
(-1/3) [ 3log x - log y]

= -3

2007-12-21 14:24:40 補充：
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