HP 48GII, Руководство пользователя, Страница: 734 / 864

Page 22-18
«
Start program
{PPAR EQ} PURGE
Purge current PPAR and EQ
‘
√
r’ STEQ
Store ‘
√
r’ into EQ
‘r’ INDEP
Set independent variable to ‘r’
‘s’ DEPND
Set dependent variable to ‘s’
FUNCTION
Select FUNCTION as the plot type
{ (0.,0.) {.4 .2}
“Rs” “Sr” } AXES
Set axes information
–1. 5. XRNG
Set x range
–1. 5. YRNG
Set y range
ERASE DRAW DRAX LABEL
Erase & draw plot, axes, and labels
PICTURE
»
Recall graphics screen to stack
Store the program in variable PLOT1. To run it, press
J
, if needed, then
press
@PLOT1
.
Example 2 – A parametric plot. Enter the following program:
«
Start program
RAD {PPAR EQ} PURGE
Change to radians, purge vars.
‘SIN(t)+i*SIN(2*t)’ STEQ
Store ‘X(t)+iY(t)’ into EQ
{ t 0. 6.29} INDEP
Set indep. variable to ‘r’, with range
‘Y’ DEPND
Set dependent variable to ‘Y’
PARAMETRIC
Select PARAMETRIC as the plot type
{ (0.,0.) {.5 .5} “X(t)”
“Y(t)” } AXES
Set axes information
–2.2 2.2 XRNG
Set x range
–1.1 1.1 YRNG
Set y range
ERASE DRAW DRAX LABEL
Erase & draw plot, axes, and labels
PICTURE
Recall graphics screen to stack
»
End program
Store the program in variable PLOT2. To run it, press
J
, if needed, then
press
@PLOT2
.