Eigenvalue, Eigenvectors, Linear Algebra, Mathematics, Principal Component.
diagonal minus the elements in the other diagonal. b) 3x3 matrices: Consider a 3x3 matrix Generic 3x3 matrix. Using Laplace formula for the determinant of a 3x3 matrix we have Image from Wikipedia. Where we multiply the determinant of a 2x2 matrix by a cofactor. c) n x n matrices: We calculate the