並前往https://math.ymhs.tyc.edu.tw/masterchen/chenyan/TeaPlan107/TeaPnCon/105SB1/CH3/105%E4%B8%8A%E5%9C%8B%E4%B8%80Ch3.2%E4%B8%80%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E5%BC%8F(%E4%B8%8A%E8%AA%B2).pdf
