作者jsdre (火麒麟小嫩嫩)
看板Grad-ProbAsk
标题[问题] 师大两题工数
时间Thu Mar 19 23:13:09 2009
1. { e^(x+y)-y }dx + {xe^(x+y)+1}dy = 0
2. 2δu/δx-3δu/δy+2u=2x
initial condition is u(x,y)=x^2 for the line 2y+x=0
δ是偏微符号
感激不尽了 >"<
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 61.227.182.90