HP 48gII Manuale Utente Scaricare il pdf (Pagina 85)

Page 5-7

These functions allow to simplify expressions by replacing some category of

trigonometric functions for another one. For example, the function ACOS2S

allows to replace the function arccosine (acos(x)) with its expression in terms

of arcsine (asin(x)).

Description of these commands and examples of their applications are

available in the calculator’s help facility (

@HELP). The user is invited to

explore this facility to find information on the commands in the TRIG menu.

Functions in the ARITHMETIC menu

The ARITHMETIC menu is triggered through the keystroke combination

„Þ (associated with the 1 key). With system flag 117 set to

CHOOSE boxes,

„Þ

shows the following menu:

Out of this menu list, options 5 through 9 (DIVIS, FACTORS, LGCD,

PROPFRAC, SIMP2) correspond to common functions that apply to integer

numbers or to polynomials. The remaining options (1. INTEGER, 2.

POLYNOMIAL, 3. MODULO, and 4. PERMUTATION) are actually sub-

menus of functions that apply to specific mathematical objects. When

system flag 117 is set to SOFT menus, the ARITHMETIC menu („Þ)

produces:

Following, we present the help facility entries for functions FACTORS and

SIMP2 in the ARITHMETIC menu:

1 2 ... 80 81 82 83 84 85 86 87 88 89 90 ... 174 175

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HP 48gII Manuale Utente Pagina 85