Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Dirac Delta Funcation Problem

  1. Oct 19, 2007 #1
    Q: Integral of Delta(x-b)dx and the lower limit is (-) infinity and upper is a
    Please help me in steps tried my best to solve.Note this is not homework I was doing the book problems or my practice
  2. jcsd
  3. Oct 19, 2007 #2
    What can you tell if [itex]a<b[/itex]?

    What about the integral in the whole line?
  4. Oct 20, 2007 #3
    Integral Problem

    Dear User
    Actually I am sorry to say that my integration is little rusty thats why just I need the first step for this question,Please if you can give it to me
  5. Oct 21, 2007 #4


    User Avatar
    Science Advisor
    Homework Helper

    Fact: [tex]\int_A\delta({x-b})dx=1 \textnormal{ if } b\in{A} \textnormal{ or } 0 \textnormal{ otherwise.}[/tex]

    That should be all the information you need. This fact should be fairly obvious to understand, but we can explain it in more detail if needed.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook