I just need help understanding a question. I was given the question

Use the power iteration method to estimate the spectral radius for (I - B A) given a tridiagonal coefficient matrix.

Although, I do not understand what the spectral radius part of this question means. I know how to compute, for the most part, a matrix using the power method. The ultimate goal is for me to be able to write Mathematica code implementing this.

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    $\begingroup$ Please consult your lecture notes or any other source on the notion of spectal radius. Until you have gotten familiar with the basics, this question is not really related to Mathematica. $\endgroup$ Oct 23 '19 at 14:40