[分析] Converge uniformly

[suzzdicon (舒玆迪控)]

Discuss the convergence and uniform convergence of


                     2
                  -ｘ
                  ──
                   ｎ
                ｅ
    f (x) = ──────   defined on R, n = 1,2,...
     n          ｎ

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推 mathblue    :|f_n(x)-0|≦ 1/n