MB1380
Jun 26th, 2007, 05:28 AM
Any help appreciated :thumb:
http://i41.photobucket.com/albums/e292/MB1380/MathsQ.jpg
Quantumcat
Jun 28th, 2007, 08:37 AM
i) this is very standard - to solve a differential equation using Laplace transforms, take the transform of both sides, solve for s algebraicly, then take the inverse laplace transform of both sides, gives you the answer y(t) ... don't forget the rules about derivatives: F(y') = sY + y(0), F(y'') = (s^2)Y + sy'(0) + sy(0) (I think) where Y is the Laplace transform of y(t).
ii) Same as above, use the rules about the unit step function and repeated functions.
Just read your textbook.