please solve the following ode.
1. x (dy/dx) + y = x (cosx)
2. y'' + 5 y' + 6y = x( e^(-2x) )
urgent. thanks
ordinary differential equation
2009-09-25 9:28 am
回答 (2)
2009-09-25 5:02 pm
✔ 最佳答案
As follows:AAAAAAAAAAAAAAA圖片參考：http://i726.photobucket.com/albums/ww265/physicsworld2010/physicsworld01Sep250901.jpg?t=1253840533
2009-09-25 09:02:59 補充：
The method used in Q.2 is variation of parameters.
Because the method of undetermined coefficients is invalid.
參考: Physics king
2009-09-26 7:15 am
第2題 我唔係好明 (1) 同 (2)點樣黎..
解釋下pls
解釋下pls
收錄日期: 2021-04-19 15:23:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090925000051KK00101