並前往https://www.studocu.com/hk/document/the-university-of-hong-kong/math1013/%E6%95%B8%E5%AD%B8%E5%90%8D%E8%A9%9E%E4%B8%AD%E8%8B%B1%E5%B0%8D%E7%85%A7%E8%A1%A8/3993745