Texas Instruments TI-86 - Using Graph Tools in Param Graphing Mode

116
Chapter 8: Polar Graphing
08POL.DOC TI-86, Chap 8, US English Bob Fedorisko Revised: 02/13/01 2:26 PM Printed: 02/13/01 3:02 PM Page 116 of 808POL.DOC TI-86, Chap 8, US English Bob Fedorisko Revised: 02/13/01 2:26 PM Printed: 02/13/01 3:02 PM Page 116 of 808POL.DOC TI-86, Chap 8, US English Bob Fedorisko Revised: 02/13/01 2:26 PM Printed: 02/13/01 3:02 PM Page 116 of 8
Preview: Polar Graphing
The graph of the polar equation A sin (B
q
) forms the shape of a flower. Graph the flower for
A=8 and B=2.5. Then explore the appearance of the flower for other values of A and B.

Select
Pol
mode from the mode screen.
- m # # #
# " b

Display the equation editor and polar
equation editor menu.

(Deselect or delete all equations if any.)
Store
r1(
q
)=8sin(2.5
q
)
.
6 &
(
/ ' /
)
8
= D
2
`
5
& E

Select
ZSTD
from the
GRAPH ZOOM
menu.
r1
is plotted on the graph screen.
- g )

Display the window editor, and then
change
q
Max
to
4
p
.
'
#
4
- ~

Select
ZSQR
from the
GRAPH ZOOM
menu.
xMin
and
xMax
are changed to
display the graph in correct proportion.

Change the values of A and B and
redisplay the graph.
( / '
&
(enter other A
and B values)
To remove the
GRAPH
menu
from the graph screen, as
shown, press
:
.
To redisplay the
GRAPH
menu, press
6
.