1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Cartersian double integral converted to polar and then evaluated #2

  1. Apr 18, 2009 #1
    1. The problem statement, all variables and given/known data
    convert line one to polar integral and then evaluate
    see problems 16 attachement


    2. Relevant equations
    r^2=y^2+x^2



    3. The attempt at a solution
    I changed to polar and evaluated the double integral but I come up with an answer of negative pi which seems odd since it is an area value and should be posititve. What did i do wrong?
    see problem 16 attachement
     

    Attached Files:

  2. jcsd
  3. Apr 18, 2009 #2

    Tom Mattson

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    You made a careless sign error at the start of the 4th line. There should be a negative in front of the integral in that step.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Cartersian double integral converted to polar and then evaluated #2
Loading...