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

Riemann Stieltjes Integral help!

  1. Feb 24, 2010 #1
    Code (Text):

    Let f =

    x, for 0<=x<=1
    1, for 1<x

    alpha =

    x^2, for 0<=x<=1
    1, for 1<x
     
    Find Integral (f) d(alpha) -- from 0 to 23

    pls help!
     
  2. jcsd
  3. Feb 24, 2010 #2
    Use the definition of the R-S integral. The answer should pop right out unless I'm missing something. Where does the problem lose you?
     
  4. Feb 24, 2010 #3

    mathman

    User Avatar
    Science Advisor

    This case easily translates into an ordinary Riemann integral.
    dα = 2xdx, 0≤x≤1
    dα = 0, x>1
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook