Calculator User Manual

Chapter 6: Graph Tools
95
06TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 95 of 2206TOOLS.DOC TI-86, Chap 6, US English Bob Fedorisko Revised: 02/13/01 2:23 PM Printed: 02/13/01 3:01 PM Page 95 of 22
Storing and Recalling Zoom-Window Variable Values
♦
To store all current zoom-window variable values simultaneously as a user-defined
custom zoom feature, select
ZSTO
from the
GRAPH ZOOM
menu.
♦
To execute a user-defined custom zoom, which resets the graph screen to the stored
zoom-window variables, select
ZRCL
from the
GRAPH ZOOM
menu.
Using
ZSTO
in these graphing modes: Stores to these zoom-window variables:
Func
,
Pol
,
Param
, and
DifEq
graphing modes
zxMin
,
zxMax
,
zxScl
,
zyMin
,
zyMax
, and
zyScl
Pol
graphing mode only
z
q
Min
,
z
q
Max
, and
z
q
Step
Param
graphing mode only
ztMin
,
ztMax
, and
ztStep
DifEq
graphing mode only
ztMin
,
ztMax
,
ztStep
, and
ztPlot
Using Interactive Math Functions
When you select a
GRAPH MATH
operation, Smart Graph displays the current graph with the
trace cursor. To perform the
GRAPH MATH
operation, press
#
and
$
to move to the function.
When a
GRAPH MATH
menu operation prompts you to specify left bound, right bound, and
guess, the accuracy of the values you specify will affect the length of time the TI
-
86 spends
calculating the answer; the better the guess, the shorter the calculation time.
The GRAPH MATH Menu
6 / &
MATH DRAW FORMT STGDB RCGDB
ROOT dy
à
dx
‰
f(x) FMIN FMAX
4
INFLC YICPT ISECT DIST ARC
4
TANLN
You can select all zoom-
window variables from the
VARS WIND
screen in any
graph mode.
You also can enter the
variable characters
individually.
The zoom-window variables
resume their standard default
values when you reset
defaults.