[理工] [工數]-pde
http://ppt.cc/tlus
令u=XYT
1
X"+kX=0 T'+---T = 0
τ
2
Y"+h Y=0
請問這題有人會嗎?
答案是b
拜託高手幫忙了
謝謝
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◆ From: 125.230.120.43
※ 編輯: cccoco 來自: 125.230.120.43 (02/16 13:24)
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Y(0)=Y(1)=0
Y=c1cos(hy)+c2sin(hy)
c1=0 , Y=c2sin(hy)=0 , h=nπ
如果要h=(2n-1)π/2
條件就要是Y(1)'=0
請問錯在哪呢? 還是這樣也可以@@?
拜託幫我看看>< 謝謝
※ 編輯: cccoco 來自: 125.230.120.43 (02/16 21:00)
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