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Homework Statement
Show that if a is greater than or equal to the degree of minimal polynomial (say k), then L^a is a linear combination of 1v,L,…,Lk−1
If L is invertible, show the same for all a<0
Homework Equations
about minimal polynomial
http://en.wikipedia.org/wiki/Minimal_polynomial_(linear_algebra )
The Attempt at a Solution
i know a few things about minimal polynomial, i know what linear combination, invertible means but i have no clue how to start this problem.
i think the most confusing part i find is that i don't know how to deal with
L^a and the 1_v,L,...,L^k-1
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