Using Isect; Using Yicpt - Texas Instruments TI-86 Manual Book

100
Chapter 6: Graph Tools
In the example, the functions
2
N4x and
y(x)=x^3+.3x
2
y(x)=x +3xN3 are selected.

Using ISECT

Select from the
ISECT
The current graph is displayed with
at the bottom of the graph screen.
Select the first function (curve). The cursor
moves to the next function and
is displayed.
Select the second function (curve).
displayed.
Guess the intersection. Either move the cursor to
a point near an intersection or enter an
Solve. The result cursor is displayed at the
intersection , the cursor coordinates are the
result, and the value is stored to
x

Using YICPT

To use , select
YICPT YICPT
# and $ to select a function, and then press b. The result cursor is displayed at the
y-intercept, the cursor coordinate values are displayed, and
menu.
GRAPH MATH
First Curve?
Second Curve?
is
Guess?
x value.
.
Ans
from the
GRAPH MATH
6 /
& / (
# $ b
# $ b
a `
1 5
(or ! ")
b
menu (6 / & / '). Press
is stored in
y
.
Ans