漸化式 演習11
a1 = 2 , an+1 = 2an / ( 3an +4 )
a1 = 8 , an+1 = (an -9) / ( an -5 )
(ハイレベル)
a1 = 1 , an+1 = (3an +6 ) / ( an +4 )
(ハイレベル)
a1 = 2 , a2 = 3 , an+2 -2an+1 -8an =0
a1 = 2 , a2 = 7 , an+2 -3an+1 +2an =0
a1 = 1 , a2 = 5 , an+2 -6an+1 +9an =0
a1 = 5 , b1 = 2 ,
an+1 =4an +2bn , bn+1 =2an +4bn
a1 = 1 , b1 = 2 ,
an+1 =2an +bn , bn+1 =4an -bn
(ハイレベル)
a1 = 2 , a2 = 3 , an+2 = 5an +4
(ハイレベル)
a1 = 1 , a2 = 1 , an+2 = an+1 +an
(ハイレベル、あとこれはフィボナッチ数列)
