I want to study special functions for the first time and I've seen that S. F. sometimes are solutions for differential equations. Do I have to learn certain topics other than calculus before studying S. F. for the first time?
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Complex analysis. – Shaun Dec 31 '20 at 19:27
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1Special functions often have several equivalent definitions. Only some of these definitions involve differential equations, although often the original definition was a differential equation. – Somos Dec 31 '20 at 20:27
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@Somos So Differential Equations is the elementary topic, then it depends if the professor will give us other equivalent definitions? – Undergraduate Student Dec 31 '20 at 20:56
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1Consult DLMF or Wolfram functions for equivalent definitions. – Somos Dec 31 '20 at 21:52