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How to define the coefficients of a polynomial to be real?

• To: mathgroup at smc.vnet.net
• Subject: [mg100925] How to define the coefficients of a polynomial to be real?
• From: BHUPALA <bhupala at gmail.com>
• Date: Thu, 18 Jun 2009 04:54:23 -0400 (EDT)

I have a 10th order polynomial (a0+a1 z+a2 z^2 + ... + an z^10). I
want to define all the coefficients to be real. I want to substitute z
= 1+i and extract only real part of it.

I have done this by defining

Element[a0,Reals];
Element[a1,Reals];

• Follow-Ups:
  • Re: How to define the coefficients of a polynomial to
    • From: Carl Woll <carlw@wolfram.com>