Laplace help.

Discussion in 'Homework Help' started by Feeder, May 12, 2008.

  1. Feeder

    Thread Starter New Member

    Apr 21, 2008
    Hi Im really struggling with this laplace problem and I was wondering if anyone could give a step by step guide on how to solve it.

    d²y/dt² + dy/dt + 6y = 2

    given t = 0, y = 0 and dy/dt = 0

    solving the equation for y.

    Any help would be greatly appreciated. My laplace skills are terrible. :(
  2. Mark44

    Well-Known Member

    Nov 26, 2007
    1. Open your book to the section about Laplace Transforms.
    2. Replace each term in your equation with its transform function. Your initial conditions will be used in this step.
    3. Solve the resulting equation for Y(s).
    4. Carry out the inverse Laplace transform to get y(t).

    Step 1 is very important, and is a surefire way to alleviate poor Laplace skills.

    Your book and/or notes should have some examples that you can follow. Let us know of your progress.