Getting Started: Polar Rose - Texas Instruments TI-82 STATS Manual Book

Getting Started: Polar Rose

Getting Started is a fast-paced introduction. Read the chapter for details.
The polar equation R=Asin(Bq) graphs a rose. Graph the rose for A=8 and B=2.5, and
then explore the appearance of the rose for other values of A and B.
1. Press z to display the mode screen. Press
† † † ~ ~ Í to select
mode. Select the defaults (the options on the
left) for the other mode settings.
2. Press o to display the polar
˜ „ ¤ Í to define
2.5
3. Press q
to select
6
the equation in the standard viewing window.
The graph shows only five petals of the rose,
and the rose does not appear to be
symmetrical. This is because the standard
window sets
qmax=2p
window, rather than the pixels, as square.
4. Press p to display the window
variables. Press †
value of to 4p.
qmax
5. Press q
to select
5
graph.
6. Repeat steps 2 through 5 with new values for
the variables
A
. Observe how the new values
r =Asin(Bq)
1
affect the graph.
5–2 Polar Graphing
Pol
editor. Press
Y=
6:ZStandard
and defines the
y [
] to increase the
4
p
5:ZSquare
and in the polar equation
B
graphing
8
.
r
1
and graph
and plot the