Evaluating a function for a specified x, Drawing on a graph – Texas Instruments TI-86 User Manual

Page 113

Chapter 6: Graph Tools

101

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 101 of 22

Evaluating a Function for a Specified x

ᕡ Select

EVAL

from the

GRAPH

menu. The

graph is displayed with the

Eval x=

prompt in

the bottom-left corner.

ᕢ Enter a real

value between window

variables

xMin

and

xMax

6 /
/ &

- ~

ᕣ Evaluate. The result cursor is on the first

selected function at the entered

value. The

coordinate values are displayed. The number
in the top-right corner indicates which
function is evaluated.

ᕤ Move the result cursor to the next or previous

selected function. The result cursor is on the
next or previous function at entered

value,

the coordinate values are displayed, and the
function number changes.

$ #

Drawing on a Graph

You can use the drawing tools (except

DrInv

) to draw points, lines, circles, shaded areas,

and text on the current graph in any graphing mode. The drawing tools use the display’s x-
and y-coordinate values.

To clear entered numbers
from the Eval x= prompt,
press

To cancel EVAL, press

after clearing the

Eval x=

prompt.

Expressions are valid for x.

You may continue to enter
valid x values for which to
evaluate the selected
functions.