[中學] 拋物線是平滑曲線
想請問一個問題
若不用"微積分"或"電腦軟體繪圖"的方法,該如何解釋拋物線是平滑曲線?
若利用描點法,畢竟描出來的點有限,
且為何中學課本上都告訴我們點與點之間必須是平滑曲線連接,而不是線段?
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