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

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

Answer 1

[Ameer Hamza]

Read about indexing: https://www.mathworks.com/help/matlab/math/array-indexing.html

M; % nxn matrix
Mj = M(1:j,1:j)