→ hellopiggy:推數學歸納法... 推 211.74.87.162 03/31
→ beemay:(#‵Д′)f〒~~~叭 推 203.70.192.60 03/31
→ aroundyou:我笑了... 推 61.64.124.231 03/31
→ lyuching:很讚^^ 推 61.229.70.17 03/31
→ jasonlin:天底下怎麼會有這麼巧的事? 推140.116.103.198 03/31
推 ufenlong:單純以歸納法來推,的確是可以如此證明 210.85.208.55 06/03
※ 編輯: medusan 來自: 61.229.98.4 (06/04 14:07)
推 slimppk:XD 218.34.144.34 06/04