[理工] [工數]-高階ODE

看板Grad-ProbAsk作者 (arroyo)時間14年前 (2010/02/20 23:25), 編輯推噓1(103)
留言4則, 3人參與, 最新討論串35/46 (看更多)
(a)(5%)Define a linear operator L3 = D^3 - 6D^2 + 12D - 8. Please determine the complementary function yc(x), a particular solution yp(x) and the general solution for L3(y) = 4e^(2x) (b)(5%)In the yc(x), if the e^2x term is removed, please find the second-order linear differential equation L2(y) = 0 whose complementary function is the linear combination of the left terms and coefficient of D^2 is 1. A小題沒有問題 但是B小題感覺怪怪的 題目的意思是找出一個解為 xe^2x x^2e^2x的2階ODE嗎@@ 我用y` y``時再湊不出答案 希望高手幫忙 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 59.121.131.17

02/20 23:29, , 1F
把D-2拿掉
02/20 23:29, 1F

02/20 23:36, , 2F
可是把D-2拿掉的解還是有e^2x這一項吧@@
02/20 23:36, 2F

02/20 23:45, , 3F
驚..真的
02/20 23:45, 3F

02/20 23:57, , 4F
我按到a...
02/20 23:57, 4F
文章代碼(AID): #1BV_xgjx (Grad-ProbAsk)
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文章代碼(AID): #1BV_xgjx (Grad-ProbAsk)