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[函数] 参数根的辐角

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hbghlyj posted 2025-3-11 18:38 |Read mode
参数根在复平面上的分支线:如何理解
  1. ContourPlot[
  2. With[{z = x + I y},
  3.   Arg[Root[#^5 + (z^2 - 1) #^3 - 1/z  #^2 + (z - I)^3 - z &,
  4.     4] ]], {x, -2, 2}, {y, -2, 2}, Exclusions -> None]
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