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Re: define an heaviside in x=0

• To: mathgroup at smc.vnet.net
• Subject: [mg95988] Re: [mg95978] define an heaviside in x=0
• From: "Jaccard Florian" <Florian.Jaccard at he-arc.ch>
• Date: Sat, 31 Jan 2009 06:43:28 -0500 (EST)
• References: <200901310614.BAA28524@smc.vnet.net>

Use Piecewise:

f[x_] := Piecewise[{{1, x > 0}, {1/2, x == 0}, {0, True}}]


Regards

Jaccard Florian




-----Message d'origine-----
De : ventutech at gmail.com [mailto:ventutech at gmail.com]
Envoy=E9 : samedi, 31. janvier 2009 07:15
=C0 : mathgroup at smc.vnet.net
Objet : [mg95978] define an heaviside in x=0

Dear all,

how can I define an Heaviside Function that returns 1/2 if evaluated in =
zero?
I need it for numerical integrals. Unitstep returns 1. How can I
override it and make it return 1/2?

Thanks in advance for your support!

Davide

• References:
  • define an heaviside in x=0
    • From: ventutech@gmail.com