Texas-instruments PLUS TI-89 User Manual download pdf (Page 142)

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101

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

and

to select the function for the first

point.

3. Set the first point. Either use

to move the cursor to the

point or type its

value.

4. Press

. A + marks the point.

5. If the second point is on a different function, use

and

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

and

to select the applicable function.

3. Set the tangent point. Either

move the cursor to the point

or type its

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

and

to select the applicable function.

3. Set the first point of the arc. Either use

to move the

cursor or type the

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

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Texas-instruments PLUS TI-89 User Manual Page 142

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