User's Manual

20070201
2-8-13
Matrix Calculations
u Modifying Matrices Using Matrix Commands
You can also use matrix commands to assign values to and recall values from an existing
matrix, to fi ll in all cells of an existing matrix with the same value, to combine two matrices
into a single matrix, and to assign the contents of a matrix column to a list fi le.
u To assign values to and recall values from an existing matrix
[OPTN] - [MAT] - [Mat]
Use the following format with the Mat command to specify a cell for value assignment and
recall.
Mat X [
m , n ]
X ...................................matrix name (A through Z, or Ans)
m ...................................row number
n ....................................column number
Example 1 Assign 10 to the cell at row 1, column 2 of the following matrix :
Matrix A =
1 2
3 4
5 6
ba a K 2 (MAT)1 (Mat)
av (A)! + (  )b,c
! - (  )w
JJ1 (' MAT)w
Example 2 Multiply the value in the cell at row 2, column 2 of the above
matrix by 5
K 2 (MAT)1 (Mat)
av (A)! + (  )c,c
! - (  )*f w