✔ 最佳答案
YoYo, please read:
圖片參考:
http://imgcld.yimg.com/8/n/HA00430218/o/20130805005610.jpg
2013-08-05 05:30:53 補充:
For using Laplace transform to solve this second order ODE, please read my revised solution:
http://upload.lsforum.net/users/public/c2268120130805suppt88.png
2013-08-05 05:32:21 補充:
Atheist:
你說得對,我已作補充回答:
http://upload.lsforum.net/users/public/c2268120130805suppt88.png