Sharp EL-9900 operation manual Advanced Graphing Features Advanced Keyboard

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 4to 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 Xfor n. Press

Ewhen done entering.

Note: Press Cto clear the previous entry.

Using a capitalized “U” or “N” here will result in an error upon pressing the Gkey.

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 Cto clear, then press Eto move one row down. Repeat until the four unnecessary entry rows are cleared.

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