# Tagged Questions

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### Representing product and sum updates of values with matrix difference equations [closed]

A vector v updates all of its elements simultaneously in discrete time steps. At each time step, each element of v may change in one of the following ways:
It may remain the same. (ex: v1 = v1)
It ...

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### Solving a linear recurrence relation with variable coefficients.

I have the following recurrence relation:
\begin{equation}
A[n]=f_A[n-1] A[n-1] + f_B[n-1]B[n-1], \\
B[n]=g_A[n-1] A[n-1] + g_B[n-1]B[n-1],
\end{equation}
where ...