[分析] 一個複數列的極限
如果複數z滿足|z|=1
那麼S_m = [1+z+z^2+...+z^(m-1)]/m會收斂嗎?
(m -> infinity)
我做到這邊後不會處理
{1 + e^(ix) + e^(2ix) + ... + e^[(m-1)ix]}/m
還麻煩幫個忙 謝謝
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