Hp 50g Graphing Calculator Manual do Utilizador descarregar pdf (Página 322)

In RPN mode, function CSWP lets you swap the columns of a matrix listed in

stack level 3, whose indices are listed in stack levels 1 and 2. For example, the

following figure shows the RPN stack before and after applying function CSWP

to matrix A in order to swap columns 2 and 3:

As you can see, the columns that originally occupied positions 2 and 3 have

been swapped. Swapping of columns, and of rows (see below), is commonly

used when solving systems of linear equations with matrices. Details of these

operations will be given in a subsequent Chapter.

Manipulating matrices by rows

The calculator provides a menu with functions for manipulating matrices by

operating in their rows. This menu is available through the MTH/MATRIX/

ROW.. sequence: („´) shown in the figure below with system flag 117 set

to CHOOSE boxes:

or through the MATRICES/CREATE/ROW sub-menu:

Both approaches will show the same functions:

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Hp 50g Graphing Calculator Manual do Utilizador Página 322