並前往https://mathmind.idv.tw/blog/2021/05/17/%E9%81%8E%E4%B8%89%E6%AC%A1%E5%A4%9A%E9%A0%85%E5%BC%8F%E5%87%BD%E6%95%B8%E7%9A%84%E5%8F%8D%E6%9B%B2%E9%BB%9E%E4%BD%9C%E5%88%87%E7%B7%9A/