definite integration
回答 (2)
2011-03-12 5:29 pm
✔ 最佳答案
http://i1090.photobucket.com/albums/i376/Nelson_Yu/2-1.jpg圖片參考：http://i1090.photobucket.com/albums/i376/Nelson_Yu/2-1.jpg
2011-03-12 10:15:54 補充：
If you draw the curve, the enclosed area is below the x-axis
Therefore the upper curve is y=0
The lower curve is y=x^2 - 4
There area is calculated by 0 - (x^2 - 4)
2011-03-12 5:38 pm
點解會係0-(x^2-4)?
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110312000051KK00205