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DISCRETE MATH Suppose A is some 3 x 3 matrix, and you nede to compute A18...

DISCRETE MATH

Suppose A is some 3 x 3 matrix, and you nede to compute A18 by hand. Describe a quick method to do this, akin to modular exponentiation. ('Exponentiation by squaring'). How many matrix multiplications does your method require?

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