Hi,

I found this method to reduce system of recurrence equation: System of recurrence relations

However, I did'nt found a way to apply this method to my problem as my recurrence equation couldn't be written in a linear equation relating x(n) and x(n-1), in addition my las equation is not recurrent.

Can't we use a similar way to reduce my system of equations?

What would be the analogue of caracteristic polynomial for my problem?

thanks