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Homework Help: Stability function for a basic RK method

  1. Jul 29, 2016 #1
    1. The problem statement, all variables and given/known data
    Hi, can someone explain how they get this stability function.

    2. Relevant equations
    http://blob:http://imgur.com/840ee1fe-f09c-49ab-bdbb-7f953777f900 [Broken] WIBfVLf.png

    3. The attempt at a solution
    I have attempted to do it two ways, and I'm not sure if I'm just having an awfully bad day at maths or am doing it wrong.

    I have tried putting in 9J5prIm.png
    but the answer has been coming out wrong, so a worked solution to work out what I've been doing wrong would be great
    Last edited by a moderator: May 8, 2017
  2. jcsd
  3. Aug 3, 2016 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
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