Composing And Decomposing Lists - HP F2226A - 48GII Graphic Calculator User Manual

Graphing calculator
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~l1`™K
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:
Page 8-2

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