RE: Taylor Series Expansions
- To: mathgroup at smc.vnet.net
- Subject: [mg32380] RE: [mg32372] Taylor Series Expansions
- From: F.H.Simons at tue.nl
- Date: Thu, 17 Jan 2002 02:23:33 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Joe,
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
Regards,
Fred Simons
Eindhoven University of Technology