1. Not finding help here? Sign up for a free 30min 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!

Someone Please Check Where I Went Wrong

  1. Apr 20, 2005 #1
    This is a Laplace Transform problem. dy/dt = -y + t^2. I formed the inverse laplace transform equation which i verified is correct, then i took partial fraction decompositions and got for a final answer that y = (L inverse) [2/s^3 - 1/(s+1)]. and hence, y = t^2 - e^-t. however the book states that the answer is t^2 - 2*t + 2 - e^-t. where did i go wrong??
     
  2. jcsd
  3. Apr 20, 2005 #2
    Oops, I think it has to be distributed as [tex] \frac{A}{(s+1)} + \frac{(Bx+C)}{s}+ \frac{(Dx+E)}{(s^2)}+\frac{(Fx+G)}{(s^3)}[/tex], doesn't it?
     
  4. Apr 20, 2005 #3
    nevermind, got it.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Someone Please Check Where I Went Wrong
Loading...