A sequence of real numbers {an} is defined by
a1=7, an=7^(an-1) (n≧2)
Prove that for any m,n≧2, am-an is divisible by 20.
求MI 做法..
Pure maths. MI 急
2010-09-03 7:21 am
回答 (1)
2010-09-03 8:13 am
✔ 最佳答案
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2010-09-03 00:15:03 補充：
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