a_2 = 1/ (1-a_1) = 1/ (1- 1/2) = 2
a_3 = 1/ (1-a_2) = 1/ (1- 2) = -1
a_4 = 1/ (1-a_3) = 1/ (1-(-1)) = 1/2 = a_1
因此.
a_4 = a_1
a_5 = a_2
a_6 = a_3
---------
a_2013 = a_2010 = a_2007 = ----= a_3 = -1
(2013= 3* 671,2010= 3*670,----)能說得清楚點嗎?只需要告訴我a2013等于多少就可以了,快快快?。?!十萬火急啊?。?!答案是-1嗎a2013= -1
一列數(shù)a1,a2,a3,…,其中a1=1/2,an=1/1-an-1(n為不小于2的正整數(shù)),則a2013=多少
一列數(shù)a1,a2,a3,…,其中a1=1/2,an=1/1-an-1(n為不小于2的正整數(shù)),則a2013=多少
數(shù)學人氣:805 ℃時間:2020-03-29 01:05:04
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