HP HP-28S - Inverting a Matrix; Finding the Determinant; Multiplying Two Arrays; Multiplying Two Matrices

Inverting a Matrix
Because the matrix in level 1 is square, you can find its inverse.
.ClliJ
1: [[ 6 -2 -3 ]
[ -1 1 0 ]
[
-1 0 1 ]]
tmmmJIDaEIBmImmmD
Finding the Determinant
Because the matrix in level 1 is square, you can find its determinant.
DET
3:
2: -619
1: 1
tmmmJIDaEIBmImmmD
Multiplying Two Arrays
You can use the 0 function to multiply two matrices or a matrix and
a vector. (Use CROSS or DOT to multiply two vectors, as described
above.)
Multiplying Two Matrices
The order of the arguments is important when multiplying two matri-
ces. The number of columns in the matrix in level 2 must equal the
number of rows in the matrix in level 1. For example, you can calcu-
late
the following matrix product.
128 11: Vectors and Matrices
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