Bug in Calculus`DiracDelta`
- To: mathgroup at smc.vnet.net
- Subject: [mg14768] Bug in Calculus`DiracDelta`
- From: "M. Rommel" <rommel at bc.edu>
- Date: Sat, 14 Nov 1998 03:07:59 -0500
- Organization: UltraNet Communications , an RCN Company http://www.ultranet.com/
- Sender: owner-wri-mathgroup at wolfram.com
I know normally "it's the user, stupid!" but this one seems real.
In[1]:= <<Calculus`DiracDelta`
In[2]:= Integrate[DiracDelta[Cos[x]],{x,0,\[Pi]}]
Out[2]= 1
That's what I agree with but the next line I cannot:
In[3]:= Integrate[DiracDelta[Cos[x]],{x,\[Pi],2\[Pi]}]
Out[3]= 0
Any comments/insights/etc. pp.?
Cheers, Martin.