推 woieyufan :費氏數列 04/26 01:35
→ woieyufan :抱歉看錯 04/26 01:36
推 woieyufan :a_n+1=(n+1)(n+2)a_1+n(n+3)/4 04/26 01:41
→ woieyufan :a_n+1=(n+1)(n+2)a_1/2+n(n+3)/4 04/26 01:42
※ 編輯: cnick 來自: 1.164.253.185 (04/26 02:06)
推 oldblackwang:a_(n+1)+1/2=((n+2)/n)(a_n+1/2) 04/26 16:54