Chapter 5: Polar Graphing; Getting Started: Polar Rose - Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book

Chapter 5:
Polar Graphing

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
† † ~ ~ Í to select
Select the defaults (the options on the left) for the
other mode settings.
2. Press o to display the polar Y= editor. Press
˜ „ ¤ Í to define
2.5
3. Press q
to select
6
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 q
defines the window, rather than the pixels, as
square.
4. Press p to display the window variables.
Press † y B to increase the value of q
4
4p.
5. Press q
to select
5
graph.
6. Repeat steps 2 through 5 with new values for the
variables and
A B
. Observe how the new values affect
r1=Asin(B q )
the graph.
screen. Press †
MODE
graphing mode.
Pol
.
r1
and graph the
6:ZStandard
max=2
and plot the
5:ZSquare
in the polar equation
8
p and
to
max

Chapter 5: Polar Graphing

97