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: Difficult integral

  1. Mar 2, 2010 #1
    1. The problem statement, all variables and given/known data

    Integral a^2 f(x) dx ..................limits are 0 to a

    I know the answer is....... 1/2 Integral (a-x)^2 f(x) dx

    2. Relevant equations

    3. The attempt at a solution
    I do not know how to approach this problem. I have tried to use the fundamental theorem of calculus its not working. This is a review for a test. Thanks in advance.
  2. jcsd
  3. Mar 3, 2010 #2

    Gib Z

    User Avatar
    Homework Helper

    That can't be your answer. a is the upper bound and hence must be a constant with respect to x, so you just take the a^2 out of the integral to the front. Other than that simplification, theres nothing we can do to evaluate or simplify that expression without knowing more about what f(x) is.

    Are you sure you have written down the question exactly as it was given?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook