User Guide

Chapter 10: Matrices 152
Negation
Negating a matrix returns a matrix in which the sign of every element is changed.
L
matrix
abs(
abs( (absolute value, MATH NUM menu) returns a matrix containing the absolute value of each
element of
matrix.
abs(matrix)
round(
round( (MATH NUM menu) returns a matrix. It rounds every element in matrix to #decimals ( 9). If
#decimals is omitted, the elements are rounded to 10 digits.
round(matrix[,#decimals])
Inverse
Use the
L1
function (œ) or › L1 to invert a matrix. matrice must be square. The determinant cannot
equal zero.