Texas TI-86 Manuale Utente

Chapter 5: Function Graphing

05FUNC.DOC TI-86, Chap 5, US English Bob Fedorisko Revised: 02/13/01 2:22 PM Printed: 02/13/01 3:01 PM Page 83 of 14

Setting Graphing Accuracy with

x and

The window variables

and

define the distance from the center of one pixel to the

center of any adjacent pixel. When you display a graph, the values of

and

are

calculated from

xMin

xMax

yMin

, and

yMax

using these formulas:

xMin

xMax

)

à126

yMin

yMax

)

à62

and

are not on the window editor. To change them, you must follow the steps above

for changing a window variable value from the home screen or in the program editor. When
you change the values stored to

and

, the TI

-86 automatically recalculates

xMax

and

yMax

from

xMin

, and

yMin

, and the new values are stored.

Setting the Graph Format

To display the graph format screen, select

FORMT

from the

GRAPH

menu (6 / (). The graph format settings

define various characteristics of the displayed graph. The
current settings are highlighted.

To change a setting, move the cursor onto the new setting,
and then press b, the same as on the mode screen.

The TI

86 retains

independent format settings
for each graphing mode.

DifEq

graphing mode, the

graph format screen key
sequence is

(Chapter 10).