Texas Instruments TI-86 - Manual (Page 107)

Chapter 6: Graph Tools
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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 22 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 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.