Name: sten Date: 12/11/17-11:52:10 AM Z


my problem is

In[33]:= Integrate2[DeltaFunction[y - x] y , {x, 0, 1}]

Out[33]= y Hold[Integrate3][\Delta,{x,0,1}]

I think I cannot write more than one symbolic variable in the DeltaFunction but it should be symbolic in my computation.
However, mathematica can compute this but I have to close FeynCalc. Is there any way?