# Gridmap Plots - HP 49g+ User Manual

Graphing calculator.

Press „ô, simultaneously if in RPN mode, to access the PLOT SETUP
window.
Press ˜ and type '(X+Y)*SIN(Y)' @@@OK@@@.
Press @ERASE @DRAW to produce the Y-Slice animation.
Press \$ to stop the animation.

## Gridmap plots

Gridmap plots produce a grid of orthogonal curves describing a function of a
complex variable of the form w =f(z) = f(x+iy), where z = x+iy is a complex
variable. The functions plotted correspond to the real and imaginary part of
w = Φ(x,y) + iΨ(x,y), i.e., they represent curves Φ(x,y) =constant, and Ψ(x,y)
= constant. For example, to produce a Gridmap plot for the function w =
sin(z), use the following:
Press „ô, simultaneously if in RPN mode, to access to the PLOT
SETUP window.
Change
to
TYPE
Gridmap.
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:
Y-Far: 1, XXLeft:-1 XXRight:1, YYNear:-1, yyFar: 1,
Press @ERASE @DRAW to draw the gridmap plot.
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.
and 'Y' as the
Indep:
Depnd:
X-Left:-1, X-Right:1, Y-Near:-1
Step Indep: 10 Depnd: 8
The result is a grid of
variables.
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