kInverting a Matrix

You can use the procedure below to invert a square matrix.
[–3 6 –11]
• Example: To invert Matrix C = 3 –4 6 4 –8 13

[

–0.4

1

–0.8

]

(

–0.8–1.5 0.50

–0.6–1.5

)

(Matrix C 33) A j 1(Dim) 3(C) 3 = 3 =

(Element input) D 3 = 6

= D 11 = 3 = D 4 =

 

 

 

6

= 4 = D 8 = 13 = t

(MatC–1)

 

 

A j3(Mat) 3(C) a =

•The above procedure results in an error if a non-square matrix or a matrix for which there is no inverse (determinant = 0) is specified.

kDetermining the Absolute Value of a

Matrix

You can use the procedure described below to determine the absolute value of a matrix.

•Example: To determine the absolute value of the matrix produced by the inversion in the previous example.

0.4

1

0.8

])

([1.5

0.5

1.5

0.80 0.6

(AbsMatAns) A AA j3(Mat) 4(Ans) =

Vector Calculations

VCT

The procedures in this section describe how to create a vector with a dimension up to three, and how to add, sub- tract, and multiply vectors, and how to obtain the scalar product, inner product, outer product, and absolute value of a vector. You can have up to three vectors in memory at one time.

E-18