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MathGroup Archive 2002

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RE: Coefficient problem

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

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 eicn.ch


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


Hi,

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?

Thanks!

CeZaR




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