HP 48g Graphing Calculator - Manual (Page 171)

Extracting and Replacing Elements of Matrices
To extract the array element at a specified position:
1. Enter the array onto the stack.
2. Enter one of the following:
B A list containing the row and column number of the element you
wish to extract: C row column '}.
B The position number of the element you wish to extract. (For
matrices, this is interpreted as row-major order.)
3. Press [ M T H ) M H T R
array element.
iKE GET to extract the specified
14
To replace an array element at a specified position;
1. Enter the array onto the stack.
2. Enter one of the following:
B A list containing the row and column number of the element you
wish to replace: L row column J.
■ The position number of the element you wish to replace. (For
matrices, this is interpreted as row-major order.)
3. Enter the new replacement element.
4. Press f M T H ) M
h
T R
m a k e
fiMXT) PUT to replace the element
at the specified location with the new element.
Characterizing Matrices
Matrix calculations are often sensitive to special characteristics of the
matrices used. The HP 48 has a number of commands that return
characteristics of matrices. Note that some commands are only defined
for square matrices, some for any rectcingular matrix.
Matrices and Linear Algebra 14-7