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!

Homework Help: Pde help

  1. Feb 10, 2006 #1
    I need a little help getting started here,

    Show that the boundry conditions X(b)=wX(a) +zX'(a)

    and
    X'(b) = yX(a) + dX'(a) on the interval a<=x<=b are symmetric if and only if wd-zy=1

    i know that the a set of boundries are symmetric if f '(x)g(x) - f(x)g'(x) = 0 evaluated at x=a and x=b. but i am confused on what f(x) and g(x) would be.
    if some one can help me get this problem started it would be greatly appreciated.

    thanks
     
  2. jcsd
  3. Feb 12, 2006 #2

    Astronuc

    User Avatar
    Staff Emeritus
    Science Advisor

    What would it mean for the BC to be 'symmetric'?

    X(a) = X(b) and X'(a) = -X'(b) perhaps.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook