HP 48gII Manual do Utilizador descarregar pdf (Página 120)

Page 9-3

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 ''

{}`

RAM

'A'`K {}`

RAM

''`K

{}` RAM 'A'`K {}` RAM ''`K

{}

RAM 'A'

{}

RAM ''

Addition and subtraction

Four examples are shown below using the matrices stored above (ALG mode).

1 2 ... 115 116 117 118 119 120 121 122 123 124 125 ... 174 175

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HP 48gII Manual do Utilizador Página 120