HP 50G, User Manual

Page: 387 / 887

Page 12-4
Θ
Enter the PLOT WINDOW environment by entering
„ò
(press
them simultaneously if in RPN mode). Use a range of –4 to 4 for H-
VIEW, then press
@AUTO
to generate the V-VIEW automatically. The
PLOT WINDOW screen looks as follows:
Θ
Plot the graph:
@ERASE @DRAW
(wait till the calculator finishes the graphs)
Θ
To see labels:
@EDIT L @LABEL @MENU
Θ
To recover the first graphics menu:
LL @)PICT
Θ
To trace the curve:
@TRACE @@X,Y@@
. Then use the right- and left-arrow keys
(
š™
) to move about the curve. The coordinates of the points you
trace will be shown at the bottom of the screen. Check that for x =
1.05 , y = 0.231. Also, check that for x = -1.48 , y = 0.134. Here is
picture of the graph in tracing mode:
Θ
To recover the menu, and return to the PLOT WINDOW environment,
press
L @CANCL@
.
<<
→
X
‘
EXP(-X^2/2)/
√
(2*
π
)
‘
>>.
Press
ƒ
, twice, to drop the contents of the stack.