Question about DiracDelta
- To: mathgroup at smc.vnet.net
- Subject: [mg68617] Question about DiracDelta
- From: "vasil michev" <michev at gmail.com>
- Date: Sun, 13 Aug 2006 05:52:25 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hi group, I need to plot this:
Plot[NIntegrate[DiracDelta[3 - Cos[x] - Cos[y] - Cos[z] - e], {x, -Pi,
Pi}, {y, -Pi, Pi}, {z, -Pi, Pi}, MaxPoints -> 1000000]/8/Pi^3, {e, 0,
6}, PlotPoints -> 30]
the problem is that the function always returns 0, no matter what the
value of 'e' is. I saw that other people have reported incorect
evaluation/simplification related to DiracDelta, but I was wondering
can anyone tell me if there's some workaround?
Thanks in advance