Mathematics Formulas
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2008-07-16 1:18 am
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The answer is as follows:圖片參考：http://i277.photobucket.com/albums/kk75/uncle_michael/080715_mat02.jpg?t=1216113481
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080715000051KK01462