Texas Instruments TI-84 Plus - Abs( (Math Num Menu); Round( (Math Num Menu); Inverse a Matrix

Chapter 10: Matrices 233
abs(
abs(abs(
abs(
abs( (absolute value, MATH NUM menu) returns a matrix containing the absolute value of
each element of
matrix.
abs(matrix)
round(
round(round(
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
InverseInverse
Inverse
Use the
L1
function (œ) to invert a matrix (^L1 is not valid). matrix must be square. The
determinant cannot equal zero.