From: nma@12000.org   
      
   On 4/13/2014 8:56 AM, w huang wrote:   
   > MathHandbook.com say   
   > integrate(delta(x), x, -inf,inf) =2   
   >   
   > Pls try it online http://mathHandbook.com yourself   
   >   
      
   This result is wrong. It should be 1 by definition.   
      
   Integrate[DiracDelta[x], {x, -Infinity, Infinity}]   
   (* 1 *)   
      
   int(Dirac(x),x=-infinity..infinity);   
   (* 1 *)   
      
   you have a bug in your program.   
      
   --Nasser   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)