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Chapter 6: Basic Function Graphing 125
06BASFUN.DOC TI-89/TI-92 Plus: Basic Function Graphing (English) Susan Gullord Revised: 02/23/01 4:09 PM Printed: 02/23/01 4:18 PM Page 125 of 22
1. From the Graph screen, press
‡
and select
9:Distance
.
2. As necessary, use
D
and
C
to select the function for the first
point.
3. Set the first point. Either use
A
or
B
to move the cursor to the
point or type its
x
value.
4. Press
¸
. A + marks the point.
5. If the second point is on a different function, use
D
and
C
to
select the function.
6. Set the second point. (If you use the cursor to set the point, a line
is drawn as you move the cursor.)
7. Press
¸
.
The distance between the two
points is displayed, along with
the connecting line.
1. From the Graph screen, press
‡
and select
A:Tangent
.
2. As necessary, use
D
and
C
to select the applicable function.
3. Set the tangent point. Either
move the cursor to the point
or type its
x
value.
4. Press
¸
.
The tangent line is drawn,
and its equation is
displayed.
1. From the Graph screen, press
‡
and select
B:Arc
.
2. As necessary, use
D
and
C
to select the applicable function.
3. Set the first point of the arc. Either use
A
or
B
to move the
cursor or type the
x
value.
4. Press
¸
. A + marks the first point.
5. Set the second point, and
press
¸
.
A + marks the second point,
and the arc length is
displayed.
Finding the
Distance between
Two Points
Drawing a Tangent
Line
Tip: To erase a drawn
tangent line, press
†
(ReGraph).
Finding an Arc
Length