1/x^2. Remember that any number raised to a negative power is the reciprocal.
The solution depends on the value of

. To make things simple, assume

. The homogeneous part of the equation is

and has characteristic equation

which admits the characteristic solution

.
For the solution to the nonhomogeneous equation, a reasonable guess for the particular solution might be

. Then

So you have


This means


and so the general solution would be
B I did this to:) it’s pretty easy once u get the hang of it
Well it depends on what the model is but if it's an IRA or whatever so if you make your own model that's easy