# Solve a 2nd order ODE.

Find a particular solution to

y'' + 9y = -18sin(3t)

Â© BrainMass Inc. brainmass.com March 4, 2021, 6:04 pm ad1c9bdddfhttps://brainmass.com/math/numerical-analysis/solve-a-2nd-order-ode-27326

#### Solution Preview

Because this is a linear ODE with constant coeffs, then we can guess yp as follow:

yp= Acos(3t)+ Bsin(3t)

However, if we look ...

#### Solution Summary

A 2nd order ODE is solved. The solution is detailed.

$2.49