HP 50G, User Manual

Page: 422 / 887

Page 12-39
Θ
Press
@EDIT ! L @LABEL @MENU
to see the graph with labels and ranges.
Θ
Press
LL @)PICT@CANCL
to return to the PLOT WINDOW environment.
Θ
Press
$
, or
L @@@OK@@@
, to return to normal calculator display.
Try also a Ps-Contour plot for the surface z = f(x,y) = sin x cos y.
Θ
Press
„ô
, simultaneously if in RPN mode, to access the PLOT SETUP
window.
Θ
Press
˜
and type ‘SIN(X)*COS(Y)’
@@@OK@@@
.
Θ
Press
@ERASE @DRAW
to draw the slope field plot. Press
@EDIT L @)LABEL @MENU
to
see the plot unencumbered by the menu and with identifying labels.
Θ
Press
LL @)PICT
to leave the EDIT environment.
Θ
Press
@CANCL
to return to the PLOT WINDOW environment. Then, press
$
, or
L @@@OK@@@
, to return to normal calculator display.
Y-Slice plots
Y-Slice plots are animated plots of z-vs.-y for different values of x from the
function z = f(x,y). For example, to produce a Y-Slice plot for the surface z =
x
3
-xy
3
, use the following:
Θ
Press
„ô
, simultaneously if in RPN mode, to access to the PLOT
SETUP window.
Θ
Change
TYPE
to
Y-Slice.
Θ
Press
˜
and type ‘X^3+X*Y^3’
@@@OK@@@
.