作者sjwei (哈)
站內trans_math
標題[微方] 請問這題該怎麼解呢
時間Mon Sep 26 23:04:47 2005
determine a region of xy-plane for which the
given differential eq. would have a unique
solution whose graph passes through a pont
(x0,y0) in the region.
(y - x) y' = y + x
謝謝大家
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