# Math Help - 2nd Order ODE

1. ## 2nd Order ODE

Hey there,

I'm having some trouble with the attached problem. If anyone could give me a guide as to how I should tackle it, it would be much appriciated.

Regards,
Finnigan.

2. Originally Posted by holmesb
Hey there,

I'm having some trouble with the attached problem. If anyone could give me a guide as to how I should tackle it, it would be much appriciated.

Regards,
Finnigan.
It is a second order costant coefficient linear inhomogeneous ODE, you find the general solution to the homogeneous equation then add that to a particular integral of the equation.

A particular integral for this will be of the form $a \sin(3x)$

CB