Some Matrix MATLAB functions

size    size of a matrix
det     determinant of a square matrix
inv       inverse of a matrix
rank      rank of a matrix
rref       reduced row echelon form
eig            eigenvalues and eigenvectors
poly        characteristic polynomial
norm       norm of matrix (1-norm, 2-norm, ∞ -norm)
cond       condition number in the 2-norm
lu LU      factorization
qr QR       factorization
chol      Cholesky decomposition
svd       singular value decomposition