Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Describing the form of a second-order D.E.

  1. Jul 30, 2009 #1
    I'm having a little trouble with a maths assignment, could someone please give me a few pointers? Bear in mind this is an assignment, worth marks towards my course, so please don't give me any answers! I'm just not exactly sure how I should approach this question. A brief explanation of the theory that would help me solve it should help a lot.

    Thanks! :smile:

  2. jcsd
  3. Jul 30, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi joriarty! Welcome to PF! :wink:

    First find a "general solution", ie to the equation d2y/dx2 + 4(dy/dx) + 20y = 0

    and then find a "particular solution" to the whole equation (which, I'm guessing, will be a combination of e-2x cos(rx) and sin(rx) ) :smile:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook