Re: Impulse Fumction using UnitStep???
- To: mathgroup at smc.vnet.net
- Subject: [mg17584] Re: Impulse Fumction using UnitStep???
- From: "Peltio" <peltDOT.ioNOS at PAMiolDOT.it>
- Date: Mon, 17 May 1999 02:14:31 -0400
- Organization: Peltio Inc.
- References: <7hge6f$4dd@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
heiffer wrote >hi, >i am taking a control systems course at university and i am trying to >evaluate an impulse function [ f[t]=0 except at f[0]=1 for, say a range >of -5 top 5 ]. If you are referring to the impulse function used in control theory, shouldn't that be the already implemented DiracDelta function, which tou can load from the same package containing UnitStep? The function you want to define has zero measure (in 'Riemann' and Lebesgue sense) and maybe that's the reason it's giving you problems >i have managed to get the step and ramp functions going using the >UnitStep function, but i could not work out the Impulse function. Any >help would be appreciated. what exactly do you have to do, and why isn't it working? (provided it is not Dirac's delta function) cheers, Peltio