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MathGroup Archive 2005

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Taking the Log causing Mathematica kernel crash.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg57051] Taking the Log causing Mathematica kernel crash.
  • From: "me" <nma at 12000.org>
  • Date: Thu, 12 May 2005 22:44:41 -0400 (EDT)
  • Reply-to: "me" <nma at 12000.org>
  • Sender: owner-wri-mathgroup at wolfram.com

Mathematica 5.1 on Windows.

Clear["Global`*"]
f[t_] := Sin[3.5 t] + 2 Cos[2 t];
g[t_] := Piecewise[{{0, t < -2Pi}, { f[t], t = -2Pi && t = 2Pi}, {0, t >
2Pi}}];
c[w_] := Integrate[ g[t] Exp[-I w t], {t, -Infinity, Infinity}] ;
Plot[20 Log[10, Abs[c[w]]], {w, -5, 5}, PlotRange -> All]

The above code causes Mathemtica kernel crash.

Change the last line above to remove the Log, then it is OK:

Plot[20 Abs[c[w]], {w, -5, 5}, PlotRange -> All]

Nasser



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