December 2020
Intermediate to advanced
1064 pages
49h 13m
English
8.9 Powers of Matrices
INTRODUCTION
It is sometimes important to be able to quickly compute a power Am, m a positive integer, of an n × n matrix A:

Of course, computation of Am could be done with the appropriate software or by writing a short computer program, but even then, you should be aware that it is inefficient to simply use brute force to carry out repeated multiplications: A2 = AA, A3 = AA2, A4 = AAAA = A(A3) = A2A2, and so on.
Computation of Am
We are going to sketch an alternative method for computing Am by means of the following theorem ...
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