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範例:弦波的反射與透射(綜合題)

三段彈性繩A,B,C連接成一串,線密度分別為u1,u2,u3,接點為P1,P2,如圖所示,已知u2>u3>u1,則一脈動自最左邊向右傳遞,當抵達C段時,所有三段繩中的脈動形狀各如何?請繪出。【中女中】

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