Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2005
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2005

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Series[] command

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55942] Re: [mg55939] Series[] command
  • From: yehuda ben-shimol <bsyehuda at gmail.com>
  • Date: Mon, 11 Apr 2005 03:14:51 -0400 (EDT)
  • References: <200504110307.XAA06466@smc.vnet.net>
  • Reply-to: yehuda ben-shimol <bsyehuda at gmail.com>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,
 a*b is only FIRST ORDER expression in terms of a and b so you could't
expect of getting higher degrees then 1. are'nt you confusing a*b with
f[a*b] or f[a,b]??
yehuda

On Apr 11, 2005 5:07 AM, Kris Preacher <preacher at unc.edu> wrote:
> Hi all,
> 
> I need to obtain the second-order Taylor series expansion of a*b around the
> points ma and mb. I thought Mathematica's Series[] command would do the
> trick, but no. The correct answer is:
> 
> ma*mb + ma(b-mb) + mb(a-ma) + (a-ma)(b-mb)
> 
> Mathematica gives:
> 
> b(a-ma) + ma(b-mb) + ma*mb
> 
> Whaddup??
> 
> Thanks,
> Kris Preacher
> UNC
> 
>


  • Prev by Date: Mathematica graphs in WORD
  • Next by Date: Re: Series[] command
  • Previous by thread: Series[] command
  • Next by thread: Re: Series[] command