HP Prime Graphing Calculator - Manual (Page 469)

Matrices 465
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Matrices
You can create, edit, and operate on matrices and vectors
in the Home view, CAS, or in programs. You can enter
matrices directly in Home or CAS, or use the Matrix Editor.
Vectors Vectors are one-dimensional arrays. They are composed
of just one row. A vector is represented by single brackets;
for example, [1 2 3]. A vector can be a real number
vector, or a complex number vector such as
[1+2*i 7+3*i].
Matrices Matrices are two-dimensional arrays. They are composed
of at least two rows and at least one column. Matrices
may contain any combination of or real and complex
numbers, such as:
or .
Matrix variables There are ten reserved matrix variables available, named
M0 to M9; however, you can save a matrix in a variable
name you define. You can then use them in calculations in
Home or CAS views or in a program. You can retrieve
matrix names from the Vars menu, or just type their names
from the keyboard.
1 2 3
4 5 6
1 2i +
3 4i –
7