National Taiwan University Dept Civil EngnChang, S.K. JasonS.K. JasonChangChuang, P.C. JonesP.C. JonesChuangChen, Hsiao-JungHsiao-JungChen2006-11-142018-07-092006-11-142018-07-092005http://ntur.lib.ntu.edu.tw//handle/246246/2006111501254753We study the paper of Ronald, Yang and Chu that was recently published in the International Journal of Production　Economics to find the optimal solution for the EOQ and EPQ models without derivatives. We will offer a simple　algebraic method to replace their sophisticated algebraic skill, and then we point out a possible direction for further　research.application/pdf171376 bytesapplication/pdfzh-TWInventoryEconomic order/production quantityShortagejournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/2006111501254753/1/3014.pdf