作者: victor7935 (victor) 看板: trans_math
标题: [微分] 证明
时间: Wed Oct 1 21:44:43 2008
The function
f(x)= 1, x rational
0, x irrational
is called the Dirichlet function. Prove that for no number c
does lim f(x) exist.
x→c
谢谢帮忙...
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※ 编辑: victor7935 来自: 140.123.221.147 (10/01 21:46)
※ 编辑: victor7935 来自: 140.123.221.147 (10/01 21:46)