HP 39g+ - Manual (Page 188)

13-10 Matrices
• Functions always produce and display a result. They
do not change any stored variables, such as a matrix
variable.
• Functions have arguments that are enclosed in
parentheses and separated by commas; for example,
CROSS
(vector1,vector2). The matrix input can be
either a matrix variable name (such as M1) or the
actual matrix data inside brackets. For example,
CROSS(M1,[1,2])
.
About commands Matrix commands are listed in the CMDS menu (
CMDS ), in the matrix category.
See “Matrix commands” on page 16-23 for details of the
matrix commands available for use in programming.
Functions differ from commands in that a function can be
used in an expression. Commands cannot be used in an
expression.
Argument conventions
• For row# or column#, supply the number of the row
(counting from the top, starting with 1) or the number
of the column (counting from the left, starting with 1).
• The argument matrix can refer to either a vector or a
matrix.
Matrix functions
COLNORM Column Norm. Finds the maximum value (over all
columns) of the sums of the absolute values of all elements
in a column.
COLNORM (matrix)
COND Condition Number. Finds the 1-norm (column norm) of a
square matrix.
COND (matrix)
CROSS Cross Product of vector1 with vector2.
CROSS (vector1, vector2)