Sharp EL-9900 User Manual

Page 101

Chapter 6: Advanced Graphing Features — Advanced Keyboard

4. Now, go to the Graph Equation Entry window by pressing

The cursor is set at the first line u(

n); pressing

C will clear

any previous entry, as well as to put the cursor at the right side

of the equation.

5. Enter 2

n-1

. Use the

key to enter n. When done,

press

E. The cursor

moves down to the second

row.

6. In the entry area u(nMin)=,

enter the minimum value of

the n, 1, then press

7. Press the

G key.

8. Press

Z, then press

1 to select 1 Auto
(automatic zoom).

9. Press the

U key, then

use the

' key to trace the graph.

Example 2: Phase-based Graphing (uv)

• Compare 2

0.9

n-1

with the previously entered sequence.

Phase-based graphing requires a set of two sequential equations.

Since we already have one entered as above, we will create

another one here, but first the sequential graph format will need

to be set to uv.

1. Press

@ f to enter the FORMAT menu, then press

G to select G TYPE.

2. Select uv by pressing

3. Press

Y to go to the

Graph Equation Entry

window.