Re: Rearranging terms - user-defined
- To: mathgroup at smc.vnet.net
- Subject: [mg127161] Re: Rearranging terms - user-defined
- From: Alexei Boulbitch <Alexei.Boulbitch at iee.lu>
- Date: Mon, 2 Jul 2012 22:20:30 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
Well, in my opinion the best way is: a + b x - b y + O[x, y]^2 // Normal a+b (x-y) Dear Andrzej, That is a nice method. Could you please kindly comment, what stays behind. >From the documentation it is not quite clear to me. It only states "Normal<http://reference.wolfram.com/mathematica/ref/Normal.html>[expr] converts a power series to a normal expression by truncating higher-order terms." but does not state, what expression is considered to be normal. Best, Alexei Alexei BOULBITCH, Dr., habil. IEE S.A. ZAE Weiergewan, 11, rue Edmond Reuter, L-5326 Contern, LUXEMBOURG Office phone : +352-2454-2566 Office fax: +352-2454-3566 mobile phone: +49 151 52 40 66 44 e-mail: alexei.boulbitch at iee.lu<mailto:alexei.boulbitch at iee.lu>