If I have an nxn matrix, how do I compute it's j'th principal minor using matlab?

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Michael Vaughan
Michael Vaughan on 12 Oct 2020
Answered: Ameer Hamza on 12 Oct 2020
If I have an nxn matrix, how do I compute it's j'th principal minor using matlab?
the j'th principal minor is the jxj matrix in n consisting of the first j rows and columns

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Answers (1)

Ameer Hamza
Ameer Hamza on 12 Oct 2020
Read about indexing: https://www.mathworks.com/help/matlab/math/array-indexing.html
M; % nxn matrix
Mj = M(1:j,1:j)

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