Re: solution of linear equations, please help!!

*To*: mathgroup at smc.vnet.net*Subject*: [mg44742] Re: solution of linear equations, please help!!*From*: koopman at sfu.ca (Ray Koopman)*Date*: Mon, 24 Nov 2003 00:05:28 -0500 (EST)*References*: <bpkp7f$cde$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

wenzhen677 at oki.com (wenzhen) wrote in message news:<bpkp7f$cde$1 at smc.vnet.net>... > Could you please give me the analytical answer of "c" directly? > which is included in the following linear equations. > sum_{i=0}^{L}{a_{ji}*x_i}+(-1)^j*c=y_j , j=1,...L+2 > The above linear equations is written in latex style. Let A be the L+2 by L+1 matrix whose elements you give as a_{ji}, let b be the column vector whose elements are (-1)^j, j=1,...,L+2, and let u be the component of b that is orthogonal to the columns of A. Then c = u.y/u.b, in Mathematica notation.