- #1
Ortix
- 64
- 0
Homework Statement
i'm supposed to find the general solution of the equation: y'' + 3y' + 2y = e^x + e^-x
Homework Equations
I have no problem with solving this equation however, i am confused with the step they are taking in the solutions (circled):
http://img522.imageshack.us/img522/7122/calcwtf.jpg
Where does that x come from next to the B? I have been looking in my book, but there is no example with this kind of solution (right hand side)
The Attempt at a Solution
i got up to the auxiliary equation and i get stuck with finding the particular solution. I'm not sure what to do here... For single variable and products as the solution i have no problem.. the addition is no biggie either (i just separate them) but the step shown above just throws me off.
help is obviously very much appreciated! :)
Last edited by a moderator: