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MathGroup Archive 2002

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RE: Coefficient problem

  • To: mathgroup at
  • Subject: [mg36431] RE: [mg36421] Coefficient problem
  • From: "Florian Jaccard" <jaccardf at>
  • Date: Sat, 7 Sep 2002 02:53:37 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

Hello !

You can proceed like this :

delta[poly2_, var_] := Coefficient[poly2, var, 1]^2 - 4*Coefficient[poly2,
var, 0]*Coefficient[poly2, var, 2]

Meilleures salutations

Florian Jaccard
e-mail : jaccardf at

-----Message d'origine-----
De : CeZaR [mailto:pascal at]
Envoyé : ven., 6. septembre 2002 09:17
À : mathgroup at
Objet : [mg36421] Coefficient problem


Now I'm trying to calculate this formula:

Delta[eq_, x_]:=Coefficient[eq, x]^2 - 4 Coefficient[eq, x^2]
Coefficient[eq, x^0]

eq has this form a x^2 + b x + c

But there is a problem with the x^0 coefficient!
How can I overcome that?



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