This is documentation for Mathematica 6, which was
based on an earlier version of the Wolfram Language.
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Residue[expr, {z, z0}]
finds the residue of expr at the point z=z0.
  • The residue is defined as the coefficient of (z-z0)^-1 in the Laurent expansion of expr.
  • Mathematica can usually find residues at a point only when it can evaluate power series at that point.
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