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

Homework Help: Integral Interpretation

  1. Jan 23, 2010 #1
    1. The problem statement, all variables and given/known data

    I recently came across a simple type of integral that I did not know how to evaluate. Generally speaking how would one interpet [tex]\int_0^a dxf(x)[/tex]?

    2. Relevant equations

    3. The attempt at a solution
    At a glance, I thought to integrate with respect to 1, but then noticed the f(x) touching the differential. I have never seen this before.
  2. jcsd
  3. Jan 23, 2010 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper
    Education Advisor

    That's just a different way of writing

    [tex]\int_0^a f(x)dx[/tex]
  4. Jan 23, 2010 #3
    I feel like an idiot. Thank you very much.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook