Sharp EL-9900 - Manual (Page 101)

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Chapter 6: Advanced Graphing Features — Advanced Keyboard
4. Now, go to the Graph Equation Entry window by pressing
Y.
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
×
2 n-1 . Use the X
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 E.
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.
3. Press Y to go to the
Graph Equation Entry
window.