1. Limited time only! Sign up for a free 30min personal 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!

Seperation of variables - first order PDE

  1. Mar 14, 2008 #1
    [SOLVED] Seperation of variables - first order PDE

    1. The problem statement, all variables and given/known data

    I have the expression X'(x)/X(x) = cx. How do I seperate the variables? It's the fraction on the left side that annoys me.

    I know that X'(x) = d(X(x))/dx, but I can't use this here?

    EDIT: Sorry for the mis-spelled title. It's "separation".
    Last edited: Mar 14, 2008
  2. jcsd
  3. Mar 14, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper

    The variables are X and x and they are basically already separated. The left side is (1/X)dX/dx. Move the dx to right getting d(X)/X=cxdx and integrate.
  4. Mar 14, 2008 #3
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Seperation of variables - first order PDE
  1. Seperation of Variables (Replies: 18)