http://istanaro.livejournal.com/ ([identity profile] istanaro.livejournal.com) wrote in [personal profile] luar_soll 2009-03-18 03:59 pm (UTC)

Что за петербургский парадокс?
А дробная производная -- я ее вводил через интеграл Коши: f^{(n)}(x)=integral dy f(y)/(y-x)^{n+1}.

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