作者bineapple (パイナップル)
看板Math
标题[分析] 一题有关uniform convergence(from Apostol)
时间Tue Jan 18 23:12:57 2011
∞
Prove that Σ(x^(2n+1)/(2n+1)-x^(n+1)/(2n+2)) converges pointwise
n=0
but not uniformly on [0,1].
我会证pointwise的部份 可是uniformly的部份就想不太到了...
有高手能给些提示吗?? 谢谢>"<
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Fermat's Last Theorem:
There are no positive integers a, b, c satisfy the identiy
a^n+b^n=c^n, where n is an integer greater than 2.
Proof: The proof is trivial so we leave it to the reader as an exercise.
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1F:推 math1209 :均匀收敛会将连续性带着走. 这级数不会是连续函数. 01/18 23:16
2F:推 hcsoso :签名档XD Wiles: 老师对不起我迟交,这次习题好难 *_* 01/18 23:16
3F:→ bineapple :嗯...我就卡在不会证这不是连续函数@@ 01/18 23:18
4F:推 math1209 :想想 log. 01/18 23:21
5F:推 ntust661 :签名档XDDD 我最讨厌原文书这样写了XD 01/18 23:42
6F:→ bineapple :嗯 我用微分直接找series的值证出来了 在1不连续 01/18 23:56
7F:→ bineapple :感谢提示~~ 01/18 23:56