推 ntust661 := = 06/01 21:43
推 deepwoody :帶進去就好了吧... 06/01 21:44
→ deepwoody :也可以用傅立葉轉換把PDE的解解出來... 06/01 21:44
→ GHJK777 :我有帶過 但是不知道在哪裡有問題 06/01 22:04
Show that z = f(x + at) + g(x - at)
is a solution of the wave equation
2 2
δ z δz
-------- = a^2 * -------
δ t^2 δx^2
300p有獎徵答!!
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