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RE: Taylor Series Expansions

  • To: mathgroup at
  • Subject: [mg32380] RE: [mg32372] Taylor Series Expansions
  • From: F.H.Simons at
  • Date: Thu, 17 Jan 2002 02:23:33 -0500 (EST)
  • Sender: owner-wri-mathgroup at


In my opinion the way Mathematica deals with Taylor series of functions of
more variables is incorrect, as your example demonstrates. But a classical
trick form calculus can be used:

Normal[ Series[ f[x, y] /. {x -> a + t x, y -> b + t y}, {t, 0, 2}] ]  /. 
  t -> 1


Fred Simons
Eindhoven University of Technology

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