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evilpostingmong
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Homework Statement
Prove that if s is an eigenvector of matrix A, then it is also an eigenvector
of matrix A^2.
Homework Equations
As=Ics
The Attempt at a Solution
We know that As=Ics.
So AAs=AIcs
A(As)=A(Ics)
A(As)-A(Ics)=0
A(As-Ics)=0
Since As-Ics=0
A(As-Ics)=A(0)=0