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commuting family [closed]

I have tow matrix A & B, that B is a parametric matrix. what i can find B so that it is commuting with A?

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closed as not a real question by Bill Johnson, Chris Godsil, Andreas Blass, suVRit, Andres CaicedoJul 1 at 3:36

If your question is about finding the values of parameters such that $A$ and $B$ commute, just solve the system of $n^2$ (if the matrices are $n \times n$) equations in the parameters that say each entry of $AB-BA$ is $0$.