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: I need help in a problem

  1. May 20, 2008 #1
    1. The problem statement, all variables and given/known data

    solve using power series:

    2. Relevant equations

    3. The attempt at a solution

    after solving it i stoped at :

  2. jcsd
  3. May 20, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper

    Your problems are coming from the fact that the differential equation is singular at 0. You can't expand it in a power series around x=0. You'll have to expand around another point if you want to do it that way. For example let u=x+1. Then the equation becomes (u-1)^2*y''+y=0. Now expand it as a series in u.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook