[理工] 幾題偏微分
1.U -2U +U =xy , 求通解
xx xy yy
U =F(y+x)+xG(y-x)
h
U =? (求不出來 T_T)
p
2.U - U = x-y , 求通解
xx yy
U =F(y+x)+G(y-x)
h
1 3 1 3 1 3
U = ? (我算是 ---x + ---y , 答案前面一樣是後面是 - ---y )
p 6 6 6
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10/20 22:46, , 1F
10/20 22:46, 1F
→
10/20 22:47, , 2F
10/20 22:47, 2F
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10/20 22:47, , 3F
10/20 22:47, 3F
→
10/20 23:04, , 4F
10/20 23:04, 4F
→
10/20 23:08, , 5F
10/20 23:08, 5F
→
10/20 23:08, , 6F
10/20 23:08, 6F
→
10/20 23:14, , 7F
10/20 23:14, 7F
→
10/20 23:17, , 8F
10/20 23:17, 8F