Can you identify the following surface?
4y^2 + z^2 - 4x^2 = 4
3D coordinate geometry
2011-09-19 2:57 am
回答 (1)
2011-09-20 5:38 am
✔ 最佳答案
http://i1090.photobucket.com/albums/i376/Nelson_Yu/int-59.jpg圖片參考：http://i1090.photobucket.com/albums/i376/Nelson_Yu/int-59.jpg
2011-09-19 21:39:34 補充：
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https://hk.answers.yahoo.com/question/index?qid=20110918000051KK00853