[數撚圍爐區] What is Mathematics? (4)

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2018-12-03 09:34:24
留名
2018-12-03 16:47:47
Consider lim n→∞ ∑ g(x_n)

其實幾時先知時候個limit 唔可以擺入個summation
2018-12-03 16:52:02
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2018-12-03 18:12:41
lim_{n->∞} Σ_{i=1}^n 1/n
= Σ_{i=1}^n lim_{n->∞} 1/n
= Σ_{i=1}^n 0
= 0
2018-12-03 18:13:32
2018-12-03 18:14:10
佢話咗個summation唔depend on n
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2018-12-03 19:02:15
連 orthogonal orthonormal都搞唔掂
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