並前往https://math.ymhs.tyc.edu.tw/chenjt99/ScrClass/1052/%E9%AB%98%E4%BA%8C/%E9%AB%98%E4%BA%8C%E7%BF%92%E4%BD%9C/2-3%20%E4%B8%89%E5%85%83%E4%B8%80%E6%AC%A1%E8%81%AF%E7%AB%8B%E6%96%B9%E7%A8%8B%E5%BC%8F(%E4%BD%9C).pdf
