definite integration

👨🏻‍🏫 學術台數學

Larry

2011-03-12 4:43 pm

Find the area between y = x^2 -4 and the x- axis

回答 (2)

用戶9112

2011-03-12 5:29 pm

✔ 最佳答案

http://i1090.photobucket.com/albums/i376/Nelson_Yu/2-1.jpg

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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)

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Larry

2011-03-12 5:38 pm

點解會係0-(x^2-4)?

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