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change of a coefficient in a polynomial

• To: mathgroup at smc.vnet.net
• Subject: [mg44772] change of a coefficient in a polynomial
• From: Paolo Bientinesi <pauldj at cs.utexas.edu>
• Date: Tue, 25 Nov 2003 00:45:46 -0500 (EST)
• Organization: University of Texas at Austin
• Sender: owner-wri-mathgroup at wolfram.com

Second question about polynomials:

assume you are given a polynomial

p[x_] :=  c[0] + c[1] x + c[2] x^2 ....

and you want to generate a polynomial p1[x] from p[x]
changing one coefficient only, like:

p1[x_] := -c[0] + c[1] x + c[2] x^2


Is there any other way other than the obvious CoefficientList
solution?

Thanks
--
Paolo

pauldj at cs.utexas.edu		        paolo.bientinesi at iit.cnr.it