[分析] continuous&cauchy sequence

[tryitredboy (dsd)]

要找一個例子

show a continuous f satisfies:

if sequence Xn 屬於 Q is a cauchy sequence

then f(Xn) is a Cauchy sequence.

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推 ericabab    :確定是找例子?那就定義f(Xn)=0就好啦