並前往https://math.ymhs.tyc.edu.tw/masterchen/chenyan/TeaPlan108/Contns/1092/%E9%AB%98%E4%BA%8C%E4%B8%8BBL/109%E4%B8%8B%E9%AB%98%E4%BA%8CBL%E5%96%AE%E5%85%834%20%E6%A2%9D%E4%BB%B6%E6%A9%9F%E7%8E%87(%E4%B8%8A%E8%AA%B2).pdf