作者: victor7935 (victor) 看板: trans_math
標題: [微分] 證明
時間: 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


謝謝幫忙...


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◆ From: 140.123.221.147
※ 編輯: victor7935      來自: 140.123.221.147      (10/01 21:46)
※ 編輯: victor7935      來自: 140.123.221.147      (10/01 21:46)