作者applexgreen (亲爱的早安)
看板trans_math
标题[考古] 93政大国贸 求面积
时间Fri Jun 20 10:39:27 2008
Find the area enclosed by the locus if all points in the plane the sum of
whose distances from two points (-4,0) (4,0) equals 10.
请问是要找出面积的方程式吗?
然後我一点头绪也无...怎样倒回来求出方程式啊Q_Q
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