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
L
1
function (
œ
) or
›
L
1
to invert a matrix.
matrice
must be square. The determinant cannot
equal zero.
