Re: please solve

*To*: mathgroup at smc.vnet.net*Subject*: [mg52934] Re: [mg52915] please solve*From*: DrBob <drbob at bigfoot.com>*Date*: Fri, 17 Dec 2004 05:18:59 -0500 (EST)*References*: <200412160841.DAA27384@smc.vnet.net>*Reply-to*: drbob at bigfoot.com*Sender*: owner-wri-mathgroup at wolfram.com

The Inverse of that matrix doesn't exist, of course. If it did, this would work: b = Inverse[Transpose[x] . x] . Transpose[x] . y Bobby On Thu, 16 Dec 2004 03:41:58 -0500 (EST), <rcmcll at yahoo.com> wrote: > Greetings: > > Could someone please solve this symbolically? > This is just the ols formula for beta-hat but I need a symbolic > solution for this special case. > > b = inv(x'x)x'y > > where > > x = 1 t t^2 > 1 t t^2 > 1 t t^2 > > > and simplify simplify simplify!! > > Thanks, > > Bob > > > > -- DrBob at bigfoot.com www.eclecticdreams.net

**References**:**please solve***From:*rcmcll@yahoo.com