Sharp EL9900C EL-9900C - Page 95

85

Chapter 6: Advanced Graphing Features — Advanced Keyboard

CONCEPT

1.

Grasp the idea of sequential equations.

2.

Use the graph tracing function to obtain approximate values.

PROCEDURE

1.

First, let us set the calculator

to the appropriate graphing

coordinate mode. Press

@

;

to enter the

SETUP

menu, press

E

to select

E COORD

, then

press

4

to select

4 Seq

, and press

C

.

2.

We will use the “Time”

sequential graph type within

the

FORMAT

menu. Press

@

f

, press

G

to select

G TYPE

, and

2

to select

2 TIME

.

3.

Then press

Y

.

The Graph Equation Entry window will open.

4.

Enter a new equation set

u(n-1)

×

(1 - 0.6) + 3000

for

u(n)=

. Press

@

u

(

7

) to enter

u

and

press

X

for

n

. Press

E

when done entering.

Note:

Press

C

to clear the previous entry.

Using a capitalized “U” or “N” here will result in an error upon

pressing the

G

key.

5.

On the second entry row

(

u(nMin) =

), enter 2000,

then press

E

.

The figure is automatically

enclosed by braces.

6. The

v

and the

w

entry sets will not be necessary in this case,

so press

C

to clear, then press

E

to move one row

down. Repeat until the four unnecessary entry rows are

cleared.

Sharp EL9900C EL-9900C - Page 95

Concept, Procedure, Setup, E Coord, Format, G Type

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