Sharp EL-9900C User Manual page 73
Graphing calculator
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Also See for EL-9900C:
- Operation manual (284 pages) ,
- Specifications (2 pages) ,
- Bid specifications (1 page)
Table of Contents
RATIONAL INEQUALITIES
1. Solve the inequality
by first pressing Y=
2. Enter the left-hand side of the inequality in Y1 by pressing MATH
1 (abs) pressing a/b
in Y2 by pressing 2
3. Press 2ndF DRAW G (SHADE) 1 (SET) 2ndF VARS A ENTER 1 (Y1)
2ndF VARS ENTER 2 (Y2).
4. View the graph by pressing ZOOM A (ZOOM) 7 (Dec).
5. Press 2ndF CALC
points of intersection, x = - 1.281, - 0.781, 0.781, and 1.281. The solution is all
values of x such that x ≤ - 1.281 or - 0.781 ≤ x ≤ 0.781 or x ≥ 1.281.
6. Turn off the shading by pressing 2ndF DRAW G (SHADE) 2 (INITIAL).
Advanced Keyboard/ALGEBRA USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
x
≤ 2 using the intersection method with shading,
2
(1 – x
)
CL to clear the Y1 prompt.
X/θ/T/n
1
–
ENTER .
2 (Intsct) repeatedly, to locate the x-values of the
20
2
X/θ/T/n x
ENTER . Enter 2
B (NUM)
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