→ cuttlefish : f(a,b,c) = a(a-b+c)? 你的無關可能要排除0?06/13 00:42
→ cuttlefish : sorry 我錯了XD 06/13 00:43
→ Vulpix : 應該是f(a,a,c)=ac算作和a有關吧。06/13 00:44
→ cuttlefish : f(a,b,c) = (a-b)(b-c)?06/13 00:45
→ RicciCurvatu: 樓上是對的但我題目錯了QAQ06/13 01:00
※ 編輯: RicciCurvatu (223.136.71.92), 06/13/2017 01:10:34
→ cuttlefish : f(a,b,c) = f(0,b-a-c,0) 06/13 02:08