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Operations With Matrices; Addition And Subtraction - HP 48gII User Manual

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Operations with matrices

Matrices, like other mathematical objects, can be added and subtracted.
They can be multiplied by a scalar, or among themselves. An important
operation for linear algebra applications is the inverse of a matrix. Details of
these operations are presented next.
To illustrate the operations we will create a number of matrices that we will
store in the following variables. Here are the matrices A22, B22, A23, B23,
A33 and B33:
In RPN mode, the steps to follow are:
{
}` RA M 'A
{
}` RA M 'A
{
}` RA M 'A
{
}` RA M 'A

Addition and subtraction

Four examples are shown below using the matrices stored above (ALG mode).
'`K
{
}` RA M '
'`K
{
}` RA M '
'`K
{
}` RA M '
'`K
{
}` RA M '
'`K
'`K
'`K
'`K
Page 9-3

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