圖:
請列明點解同步驟
http://xs120.xs.to/xs120/07434/1231132213123123213123123.JPG
F2數學 轉主項
2007-10-26 5:37 am
回答 (1)
2007-10-26 5:43 am
✔ 最佳答案
a - b = b(c + a)b(c + a) + b = a
b (c + a + 1) = a
b = a/(c + a + 1)
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a = bc + (1/2)de^2
bc = a - (1/2)de^2
bc = a - de^2 / 2
b = a/c - (de^2) / (2c)
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071025000051KK04044