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MathGroup Archive 1995

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Re: Problem with LaplaceTransform (Help !)

  • To: mathgroup at christensen.cybernetics.net
  • Subject: [mg1026] Re: [mg949] Problem with LaplaceTransform (Help !)
  • From: sergio at shark.inst.bnl.gov (Sergio Rescia)
  • Date: Wed, 10 May 1995 05:05:25 -0400

Load the Package Calculus`DiracDelta` and use the function

In[56]:= ?UnitStep
UnitStep[x] is a function that is 1 for x > 0 and 0 for x < 0. UnitStep[x1,
   x2, ...] is 1 for (x1 > 0) && (x2 > 0) && ... and 0 for (x1 < 0) || (x2 <
   0) || ... .

In[56]:= LaplaceTransform[UnitStep[t],t,s]
0.0166667 Second

         1
Out[56]= -
         s


regards,

sergio rescia
-------------------------------------
Reply to :
Sergio Rescia
Brookhaven National Laboratory
Instrumentation Division - Bld 535B
UPTON, NY 11973-5000 - U.S.A.
E-mail: Rescia at bnl.gov (Internet)
	Rescia@bnl     (Bitnet)
	BNL::RESCIA    (DECNET) 
Fax: 516-282-5773
-------------------------------------



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