Can anybody point me towards a similar problem with a solution. So far in Discrete maths I have had the best results from looking at a problem with a soution and then working out the hows and whys, I have read my notes on this topic over and over but they are long winded explanations in words, with no examples.

So if any one can point me to a similar problem/exercise I would be appreciative. At the moment I seem to be lost with this problem.

, n>= 0 with

(x-9)(x+7) = 0

x=9, x=-7 <---is this part correct?

for arbitrary constants A and B

Mr F says: To check if it's correct, substitute it into the **homogenous** difference equation. Does it work? (Do you understand the thinking behind what you have done above?)
RHS

64n =

<-- is this correct?? Mr Fantastic is this the particular solution you refer to that should be

Mr F says: Yes. for arbitrary constants A and B

<-- I think my goal is to try and find A and B for these expressions