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 > >
- References:
- Series[] command
- From: "Kris Preacher" <preacher@unc.edu>
- Series[] command