Re: define an heaviside in x=0
- To: mathgroup at smc.vnet.net
- Subject: [mg96003] Re: define an heaviside in x=0
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Sat, 31 Jan 2009 06:46:17 -0500 (EST)
- Organization: The Open University, Milton Keynes, UK
- References: <gm0q8e$rrh$1@smc.vnet.net>
In article <gm0q8e$rrh$1 at smc.vnet.net>, ventutech at gmail.com wrote:
> 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?
In[1]:=
Unprotect[UnitStep];
UnitStep[0] = 1/2;
Protect[UnitStep];
UnitStep[0]
Out[4]= 1/2
Regards,
--Jean-Marc