# Pr-surface Plots - HP 50g User Manual

Graphing calculator.

Press „ô, simultaneously if in RPN mode, to access to the PLOT
SETUP window.
Change
TYPE
Press ˜ and type 'SIN(X+i*Y)' @@@OK@@@.
Make sure that 'X' is selected as the
„ò, simultaneously if in RPN mode, to access the PLOT
Press
WINDOW screen.
Keep the default plot window ranges to read:
Far: 1, XXLeft:-1 XXRight:1, YYNear:-1, yyFar: 1,
Press @ERASE @DRAW to draw the gridmap plot. The result is a grid of functions
corresponding to the real and imaginary parts of the complex function.
Press @EDIT L@LABEL @MENU to see the graph with labels and ranges.
Press LL@) P ICT @CANCL to return to the PLOT WINDOW environment.
Other functions of a complex variable worth trying for Gridmap plots are:
(1) SIN((X,Y))
(3) EXP((X,Y))
(5) TAN((X,Y))
(7) (X,Y)^3
(9)
(X,Y)

## Pr-Surface plots

Pr-Surface (parametric surface) plots are used to plot a three-dimensional
surface whose coordinates (x,y,z) are described by x = x(X,Y), y = y(X,Y),
z=z(X,Y), where X and Y are independent parameters.
to
Gridmap.
i.e., F(z) = sin(z)
z
i.e., F(z) = e
i.e., F(z) = tan(z)
3
i.e., F(z) = z
1/2
i.e., F(z) = z
and 'Y' as the
Indep:
X-Left:-1, X-Right:1, Y-Near:-1 Y-
Step Indep: 10 Depnd: 8
(2)(X,Y)^2
(4) SINH((X,Y))
(6) ATAN((X,Y))
(8) 1/(X,Y)
variables.
Depnd:
2
i.e., F(z) = z
i.e., F(z) = sinh(z)
-1
i.e., F(z) = tan
i.e., F(z) = 1/z
Page 12-41
(z)