b**k
发帖数: 1219 | | b**k
发帖数: 1219 | 2 级数 A0, A1,.....An, An+1
An+1 + 1/An = 4
【在 b**k 的大作中提到】
| R*********r
发帖数: 1855 | | c****o
发帖数: 1280 | 4 it depends your initial deta, then according to different data, you can see
the monotonicity of this sequence.then see the convergence.
【在 b**k 的大作中提到】
| M**********n
发帖数: 432 | 5 If A_n->infinity as n->infinity, then 1/A_n -> zero.
Therefore, A_(n+1)+1/A_n = A_(n+1) = 4 can not hold as n->infinity.
A_n must be finite as n->infinity.
【在 b**k 的大作中提到】
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