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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
ᕡ
Select
ISECT
from the
GRAPH
MATH
menu.
The current graph is displayed with
First Curve?
at the bottom of the graph screen.
ᕢ
Select the first function (curve). The cursor
moves to the next function and
Second Curve?
is displayed.
6 /
& / (
# $ b
ᕣ
Select the second function (curve).
Guess?
is
displayed.
ᕤ
Guess the intersection. Either move the cursor to
a point near an intersection or enter an
x
value.
# $ b
a
1
`
5
(or ! ")
ᕥ
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.
