[mathcad] Re: Fw: Heaviside function

Author: Tom Gutman Posted: Mon, 30 Apr 2007 14:51:09 -0700

There are a number of reasons why this was done, one of which is to
allow the Heaviside step function to work with Fourier transforms. I
am curious as to how you were using the function that that change is
causing problems for your sheets.

Tom Gutman

From: "Paul.Bragg"
To: Mathcad Discussion List "mathcad"
Sent: Monday, April 30, 2007 1:15 AM
Subject: [mathcad] Fw: Heaviside function

>
> Forwarded to list by Paul Bragg, Adept Scientific
>
> I have just upgraded to version 14 and noticed that a program that
ran
> in V13 is no longer running.
>
> I traced the origin to a redefinition of the Heaviside function.
>
> The V13 definition returns 1 for the argument >=0 and 0 otherwise.
The
> V14 definition is the same except argument=0 returns 0.5.
>
> I know that both definitions are used by mathematicians but find it
> unhelpful that Mathcad has changed the definition it uses.
>
> I use the Heaviside function a lot and am not very keen on going
through
> and rewriting all my programs. I suppose I could redefine the
function
> myself at the beginning of each as H(x) = ceil(H(x)) but this does
not
> seem very satisfactory.
>
> I thought it might be worth warning others of the problem.
>
> Stephen
>
> --
> Stephen Senn (
> 17 Dundonald Road
> Glasgow, G12 9LL, UK
> tel: +44 (0)141 334 1475
>
>
>
>
> Contributions: "mathcad"
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