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About UnitStep and ZeroValue

• To: mathgroup at smc.vnet.net
• Subject: [mg76034] About UnitStep and ZeroValue
• From: solidifire <barabbasgospel at yahoo.com.tw>
• Date: Tue, 15 May 2007 04:51:02 -0400 (EDT)

In Mathematica 3.0, UnitStep is defined in package
Calculus`DiracDelta`
and there is an option named ZeroValue, which enables the user to
define
the value of UnitStep[0].

http://documents.wolfram.com/v3/AddOns/Calc_DiracDelta-.html
or
http://tinyurl.com/35rtl7

In Mathematica 5.0, UnitStep is a built-in function and the default
value of UnitStep[0] is 1. It seems that ZeroValue is no longer
accessible. Is there any method of changing this default value?

Thank you in advance.

• Follow-Ups:
  • Re: About UnitStep and ZeroValue
    • From: Murray Eisenberg <murray@math.umass.edu>