Matrix Functions And Commands; Argument Conventions; Matrix Functions - HP 39gs User Manual

Matrix functions and commands

About functions
About commands

Argument conventions

Matrix functions

COLNORM
15-10
•
Functions can be used in any aplet or in HOME. They
are listed in the MATH menu under the Matrix
category. They can be used in mathematical
expressions—primarily in HOME—as well as in
programs.
•
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]).
Matrix commands are listed in the CMDS menu (
), in the matrix category.
CMDS
See "Matrix commands" on page 18-24 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.
•
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.
Column Norm. Finds the maximum value (over all
columns) of the sums of the absolute values of all elements
in a column.
COLNORM(matrix)
Matrices