MathGroup Archive 2000

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Integral Convergence

  • To: mathgroup at
  • Subject: [mg23760] Re: [mg23649] Integral Convergence
  • From: "Richard Finley" <rfinley at>
  • Date: Mon, 5 Jun 2000 01:09:56 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

Did you really want to define your function with the unit step inside the square root?
 Also you state that the function is nonzero for periodic intervals...where is the periodicity?  RF

>>> Viorel Ontalus <vio2 at> 05/28/00 09:09PM >>>
Dear All,
I am having problems with some calculations and I am asking for help or

I am integrating a piecewise defined function. The function is non zero
for some periodic intervals.
When nonzero the function has the form f[x_]:=c * Sqrt[ 1-( (x-a)/b )^2*
UnitStep[1-( (x-a)/b )^2] ]
with a, b, c constants
I want to plot g[y]
I get a lot of messages that are telling  :"Nintegrate failed to
converge to prescribed accuracy"
" Integration converging too slowly"   etc.

Does anybody know a fix?

Thanks Vio

  • Prev by Date: Round off or up
  • Next by Date: Fwd: Global Font Size
  • Previous by thread: Re: Round off or up
  • Next by thread: Re: Integral Convergence