Series
- To: mathgroup at smc.vnet.net
- Subject: [mg42663] Series
- From: Konstantin L Kouptsov <kouptsov at wsu.edu>
- Date: Sat, 19 Jul 2003 03:19:48 -0400 (EDT)
- Organization: Washington State University
- Sender: owner-wri-mathgroup at wolfram.com
When expanding a function of several arguments in series,
I want to retain only terms having the total power not more than some
number. For example:
Series[Sin[x - y^2], {x, 0, 3}, {y, 0, 3}]// Normal// Expand
gives
x - x^3/6 - y^2 + x^2 y^2/2
with the unwanted last term of power 4. How to do this in
elegant/efficient way?
One way is to do
Series[Sin[a x - (a y)^2], {a, 0, 3}] /.{a->1}
but as the function gets more complicated, this way becomes ugly.
--
Konstantin L Kouptsov
Department of Physics, Washington State University
- Follow-Ups:
- Re: Series
- From: Daniel Lichtblau <danl@wolfram.com>
- Re: Series