HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 651)

100

101

Page 21-2

„´@)HYP @SINH SINH Calculate sinh of level 1

1#~„x „º 1 x SQ Enter 1 and calculate x

„´@)@MTH@ @LIST @ADD@ ADD Calculate (1+x

/ / then divide

[']

~„x™ 'x'

„°@)@MEM@@ @)@DIR@@ @PURGE PURGE Purge variable x

Program in level 1

_______________________ __________ _____________________

To save the program use:

[']~„gK

Press J to recover your variable menu, and evaluate g(3.5) by entering the

value of the argument in level 1 (3.5`) and then pressing @@@g@@@.

The result is 1.2485…, i.e., g(3.5) = 1.2485. Try also obtaining g({1 2 3}),

by entering the list in level 1 of the display:

„ä1#2#3` and pressing @@@g@@@. The result now is

{SINH(1)/2 SINH(2)/5 SINH(3)/10}, if your CAS is set to

EXACT mode. If

your CAS is set to APPROXIMATE mode, the result will be {0.5876..

0.7253… 1.0017…}.

Global and local variables and subprograms

The program @@@g@@@, defined above, can be displayed as

'x' STO x SINH 1 x SQ ADD / 'x' PURGE »

by using ‚@@@g@@@.

Notice that the program uses the variable name x to store the value placed in

level 1 of stack through the programming steps

'x' STO. The variable x,

while the program is executing, is stored in your variable menu as any other

variable you had previously stored. After calculating the function, the

program purges (erases) the variable x so it will not show in your variable

menu after finishing evaluating the program. If we were not to purge the

variable x within the program its value would be available to us after program

execution. For that reason, the variable x, as used in this program, is referred

to as a global variable

. One implication of the use of x as a global variable

is that, if we had a previously defined a variable with the name x, its value

1 2 ... 646 647 648 649 650 651 652 653 654 655 656 ... 863 864

Comentários a estes Manuais

Sem comentários

HP 48gII Graphing Calculator Manual do Utilizador Página 651

Comentários a estes Manuais

Manuais e produtos relacionados com não HP 48gII Graphing Calculator