作者PttFund (批踢踢基金只进不出)
看板Math
标题[分析] 初微(28)
时间Sun Jul 17 09:54:48 2005
Suppose that |a_n| < 2 and
|a_(n+2) - a_(n+1)|≦ (1/8)| ( a_(n+1) )^2 - ( a_n )^2 |
for all positive integers n. Show that {a_n} converges.
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