18
Advanced Keyboard/CALCULUS USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
1. Turn the calculator on and set the calculator to sequence mode by pressing
2ndF SET UP E (COORD) 4 (Seq).
2. Press 2ndF QUIT Y= to access the sequence prompts. Clear
any sequences by presing CL .
3. Enter the sequence generator a
n
= n
2
– n for u(n) by pressing X/θ/T/n
x
2
– X/θ/T/n ENTER . Enter n
1
= 1 for u(nMin) by pressing
1 ENTER .
4. View a table of sequence values by pressing TABLE .
5. Graph the sequence by first setting the format to time and drawing to dot
mode. Do this by pressing 2ndF FORMAT G (TYPE) 2 (Time).
Press 2ndF QUIT to exit the FORMAT menu. Change to dot mode by
pressing 2ndF DRAW D (LINE) ENTER ENTER . Enter the viewing
window by pressing WINDOW 1 ENTER 1 0 ENTER 1 ENTER
1 ENTER
(–)
1 ENTER 1 1 ENTER 1 ENTER
(–)
1 0
ENTER 1 0 0 ENTER 1 0 ENTER . View the sequence by
pressing GRAPH .
6. Turn off sequence mode and dot mode.
SEQUENCES
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