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Chapter 6: Graph Tools
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 100 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 100 of 22
Using ISECT
Select
ISECT
from the
GRAPH
MATH
menu.
The current graph is displayed with
First Curve?
at the bottom of the graph screen.
Select the first function (curve). The cursor
moves to the next function and
Second Curve?
is displayed.
6 /
& / (
# $ b
Select the second function (curve).
Guess?
is
displayed.
Guess the intersection. Either move the cursor to
a point near an intersection or enter an
x
value.
# $ b
a
1
`
5
(or ! ")
Solve. The result cursor is displayed at the
intersection , the cursor coordinates are the
result, and the
x
value is stored to
Ans
.
b
Using YICPT
To use
YICPT
, select
YICPT
from the
GRAPH
MATH
menu (
6
/
&
/
'
). Press
#
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
y
is stored in
Ans
.
In the example, the functions
y(x)=x^3+.3x
2
N
4x
and
y(x)=x
2
+3x
N
3
are selected.
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