HP Prime Graphing Calculator - Manual (Page 475)

Matrices 469
To store one
element
In Home view, enter value, tap , and then enter
matrixname(row,column).
For example, to change the element in the first row and
second column of M5 to 728 and then display the
resulting matrix:
728
AQ 5
R 1 o 2
E
An attempt to store an
element to a row or
column beyond the size of the matrix results in re-sizing the
matrix to allow the storage. Any intermediate cells will be
filled with zeroes.
To send a matrix You can send matrices between calculators just as you can
send apps, programs, lists, and notes. See “Sharing data”
on page 44 for instructions.
Matrix arithmetic
You can use the arithmetic functions (+, –, Ч, ч, and
powers) with matrix arguments. Division left-multiplies by
the inverse of the divisor. You can enter the matrices
themselves or enter the names of stored matrix variables.
The matrices can be real or complex.
For the next examples, store [[1,2],[3,4]] in M1 and
[[5,6],[7,8]] in M2.