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Matrix which columns form the eigenspace of the eigenvalue k of A?

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Niklas Tyni
Niklas Tyni on 26 Oct 2019
I want to write a function EIGENSPACE, which takes a matrix A and a scalar k as argument and returns a matrix which columns form the eigenspace k of A.
A = [0,0,4;1,0,-17;0,1,8]
I guess I first have to write a function for row reductions and then identify the null-space from the (R)REF of A-k*eye(size(A)) OR something like this:
null(A-k*eye(size(A)), 'r')
Thanks in advance

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