Texas Instruments TI-83 Manual Book page 176

abs(
round(
M1
(Inverse)
Powers
10-10 Matrices
(absolute value,
abs(
containing the absolute value of each element of matrix.
matrix
abs( )
(
round( MATH NUM
element in matrix to #decimals ( 9). If #decimals is
omitted, the elements are rounded to 10 digits.
matrix[ #decimals]
round( ,
L1
Use the function (—
valid). matrix must be square. The determinant cannot
equal zero.
L1
matrix
To raise a matrix to a power, matrix must be square. You
2 3
can use (¡),
power between
0
2
matrix
3
matrix
matrix power
^
menu) returns a matrix
MATH NUM
menu) returns a matrix. It rounds every
)
) to invert a matrix (
( menu), or
MATH
and .
255
is not
^L1
power (›) for integer
^