並前往https://blog.xuite.net/autobuy88/blog/61989413-%E9%AB%98%E7%AD%89%E5%B7%A5%E7%A8%8B%E6%95%B8%E5%AD%B8%287%E7%89%88%29+O%E2%80%99Neil%2F+Advanced+Engineering+Mathematics+7%2Fe+Peter+V.+O%E2%80%99Neil
