HP 40gs User Manual page 325

COND
CROSS
DET
DOT
EIGENVAL
EIGENVV
IDENMAT
INVERSE
LQ
LSQ
Matrices
Condition Number. Finds the 1-norm (column norm) of a
square matrix.
COND(matrix)
Cross Product of vector1 with vector2.
CROSS(vector1, vector2)
Determinant of a square matrix.
DET(matrix)
Dot Product of two arrays, matrix1 matrix2.
DOT(matrix1, matrix2)
Displays the eigenvalues in vector form for matrix.
EIGENVAL(matrix)
Eigenvectors and Eigenvalues for a square matrix.
Displays a list of two arrays. The first contains the
eigenvectors and the second contains the eigenvalues.
EIGENVV(matrix)
Identity matrix. Creates a square matrix of dimension
size × size whose diagonal elements are 1 and off-
diagonal elements are zero.
IDENMAT(size)
Inverts a square matrix (real or complex).
INVERSE(matrix)
LQ Factorization. Factors an m × n matrix into three
matrices:
{[[ m × n lowertrapezoidal]],[[ n × n orthogonal]],
[[ m × m permutation]]}.
LQ(matrix)
Least Squares. Displays the minimum norm least squares
matrix (or vector).
LSQ(matrix1, matrix2)
18-11