Solving Systems Of Linear Equations - HP 39g+ User Manual

To invert a matrix
To negate each
element

Solving systems of linear equations

Example
13-8
To divide the two matrices M1 and M2 that you created
for the previous example, press the following keys:
M1
M2
You can invert a square matrix in HOME by typing the
matrix (or its variable name) and pressing
. Or you can use the matrix INVERSE command.
Enter INVERSE(matrixname) in HOME and press
.
You can change the sign of each element in a matrix by
pressing before the matrix name.
Solve the following linear system:
2x + 3y + 4z = 5
x + y z – = 7
4x y – + 2z = 1
1. Open the Matrix
catalog and create a
vector.
MATRIX
2. Create the vector of the
constants in the linear
system.
5 7
1
3. Return to the Matrix
Catalog.
MATRIX
In this example, the
vector you created is
listed as M1.
–1
x
Matrices