[問題] 電路5.58
題目給個微方然後要求解particular solution
解答說 因為forcing functoin有cos(t)的形式
所以猜 Asin(t) + Bcos(t)
雖然說這樣解出來沒有錯
但是不是應該要先找complementary function
然後再看看假設的particular solution有沒有類似項,有的話乘上t嗎?
還是說解答因為已經知道沒有類似項,所以直接省略這個步驟?
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