[理工] [工數]-ODE
又是ODE T_T
D = d/dx
(D-2)^3(D^2+9)y = x^2e^2x + xsin3x
呃..我是想問這題用什麼解法比較快....
我用逆運算子算 光算一題就花了10幾分鐘..和快整頁的計算紙= ="
因為這題配分才6分...慢慢算投資報酬率也太低
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 125.224.80.171
推
02/03 22:00, , 1F
02/03 22:00, 1F
→
02/03 22:07, , 2F
02/03 22:07, 2F
推
02/03 22:23, , 3F
02/03 22:23, 3F
推
02/03 22:31, , 4F
02/03 22:31, 4F
→
02/03 22:32, , 5F
02/03 22:32, 5F
→
02/03 22:34, , 6F
02/03 22:34, 6F
→
02/03 22:44, , 7F
02/03 22:44, 7F
推
02/03 23:05, , 8F
02/03 23:05, 8F
→
02/03 23:16, , 9F
02/03 23:16, 9F
→
02/03 23:17, , 10F
02/03 23:17, 10F
→
02/03 23:30, , 11F
02/03 23:30, 11F
噓
02/03 23:38, , 12F
02/03 23:38, 12F
→
02/03 23:39, , 13F
02/03 23:39, 13F
推
02/04 00:40, , 14F
02/04 00:40, 14F
→
02/04 06:27, , 15F
02/04 06:27, 15F
討論串 (同標題文章)