General--How to use "CoefficientList" command to get a matrice from a polynome?

*To*: mathgroup at smc.vnet.net*Subject*: [mg69191] General--How to use "CoefficientList" command to get a matrice from a polynome?*From*: abdou.oumaima at hotmail.com*Date*: Fri, 1 Sep 2006 06:41:32 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

I'm trying to do the following: First of all, I have this polynome Psid[[n]]= (-1)^n Psip[[n]] + ksi Sum[M[[n',n]] . Psip[[n']], {n',0,CN}] + 0(ksiÂ²). I need to get the matrix M. I put: CN=3; Psip={1,0,0}; Psid={1.0000000000000000000 - 0.9443595442280599 ksi, 0.6356361712260359 ksi, 0.06956731675750103 ksi}; M = CoefficientList[Psid, ksi]. But it doesn't resolve me the problem :-( What to do please to find the M matrix. Any suggestion Please. Cheers. Lian. Link to the forum page for this post: http://www.mathematica-users.org/webMathematica/wiki/wiki.jsp?pageName=Special:Forum_ViewTopic&pid=13214#p13214 Posted through http://www.mathematica-users.org [[postId=13214]]