2010-03-25, 04:50 PM
rethic Wrote:Hi, I'm totally sucking at math right now, particularly differential equations. Right now, I'm in the section of the book talking about solving nonhomogeneous equations suing the method of undetermined coefficients.
A specific problem I'm having trouble with is y"-3y'+2y = e^x*sin(x). Anyone care to explain the process to me?
The answer in the back of the book is y = c1*e^x + c2*e^(2x) + 1/2*e^x*(cos(x)-sin(x)) where c1 and c2 are arbitrary coefficients.
Have to remember what undetermined coefficient process was. It should be straightforward if you follow how a basic example works.
too bad I forgot the process f3