Find a particular solution of y"+3y'-2y=-e^(2x)(5cos2x+9sin2x).

Question

idealist10 · Answer

@freckles @hartnn @mathstudent55 @Hero @Kainui @Compassionate @tkhunny

freckles · Answer

have you tried:
$$y_p=e^{2x}[A \cos(2t)+B(\sin(2t)]$$

freckles · Answer

that would be my first guess

idealist10 · Answer

Okay, let me try it.

tkhunny · Answer

Seems to be an awful lot of this, lately.

1) Do NOT post a problem with no work shown - work that is your own.
2) Do NOT tag the world.  Very inconsiderate.
3) Have you even tried to solve the Characteristic Equation?

Throw us a bone so we can help you appropriately.

freckles · Answer

http://tutorial.math.lamar.edu/Classes/DE/UndeterminedCoefficients.aspx all I did was use a combination of what was given on this table @Idealist10

idealist10 · Answer

Thank you! I got the right answer.