作者weibox0931 (镫)
看板Grad-ProbAsk
标题[理工] [工数]拉式联立方程
时间Thu Dec 17 10:23:30 2009
Use the Lapiace transform to Solve the system
y1'- 2 y2' + 3 y3 = 0
y1 - 4 y2' + 3 y3' = t
y1 - 2 y2' + 3 y3' = -1
y1(0)=y2(0)=y3(0)=0
请大大帮忙了
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