# Homework Help: How would i approach this?

1. Jun 1, 2005

what method do i employ to solve this?

$$y''' + 4y'' + 4y'=0$$

does the above lead to something like this?

$$r^3 +4r^2 +4r=0$$

2. Jun 1, 2005

### Corneo

Approaching this problem like if it was a 2nd order ODE yield a solution that satisfied the ODE. But I am not sure if this will work all the time.

3. Jun 1, 2005

Yes,it does.

Daniel.

4. Jun 1, 2005