作者sjwei (哈)
站内trans_math
标题[微方] 请问这题该怎麽解呢
时间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
谢谢大家
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