HP 48gII Graphing Calculator Instrukcja Użytkownika Pobierz pdf (Strona 257)

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The figure below shows the RPN stack before pressing the K key:

Composing and decomposing lists

Composing and decomposing lists makes sense in RPN mode only. Under

such operating mode, decomposing a list is achieved by using function

OBJ. With this function, a list in the RPN stack is decomposed into its

elements, with stack level 1: showing the number of elements in the list. The

next two screen shots show the stack with a small list before and after

application of function OBJ:

Notice that, after applying OBJ, the elements of the list occupy levels 4:

through 2:, while level 1: shows the number of elements in the list.

To compose a list in RPN mode, place the elements of the list in the stack,

enter the list size, and apply function LIST (select it from the function

catalog, as follows: ‚N‚é, then use the up and down arrow keys

(—˜) to locate function LIST). The following screen shots show the

elements of a list of size 4 before and after application of function LIST:

Note: Function OBJ applied to a list in ALG mode simply reproduces the

list, adding to it the list size:

1 2 ... 252 253 254 255 256 257 258 259 260 261 262 ... 863 864

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