To divide by a
To invert a matrix
To negate each
Solving systems of linear equations
For division of a matrix or a vector by a square matrix,
the number of rows of the dividend (or the number of
elements, if it is a vector) must equal the number of rows
in the divisor.
This operation is not a mathematical division: it is a left-
multiplication by the inverse of the divisor. M1/M2 is
equivalent to M2
To divide the two matrices M1 and M2 that you created
for the previous example, press the following keys:
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
before the matrix name.
Solve the following linear system:
1. Open the Matrix
catalog and create a
2. Create the vector of the
constants in the linear