臺北市立建國高級中學數學科Division of Mathematics, Taipei Municipal Chien Kuo Senior High School2014-10-272014-10-272013-08-??http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/10502中學生通訊解題第八十一期題目參考解答及評註The solutions for reference and analysis to the questions in the 81st issue of high school mathematics through communication