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3
Advanced Keyboard/ALGEBRA USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
Steps for solving an equation using the graphic method
1. Turn the calculator on and press 2ndF SOLVER to access the solver
feature. Press CL to clear the formula entry screen.
Select the Graphic method for solving by pressing 2ndF SOLVER A
(METHOD) 3 (Graphic).
2. Enter the formula V = π r
2
h by pressing ALPHA V ALPHA = 2ndF
π ALPHA R a
b
2 ALPHA H .
3. This equation is the formula for calculating the volume of a cylinder (V) in
terms of the cylinder's height ( H) and radius ( R). Press ENTER to view the
variable list.
4. To find the radius of a cylinder with a volume of 30 cubic inches, and a
height of 10 inches, enter the values by pressing 3 0 ENTER ▼ 1
0 ENTER . Press ▲ and notice the radius ( R) is now highlighted by
the cursor.
5. Press 2ndF EXE to solve for the radius. The graphic solver will prompt
you for a variable range to solve within. Set the variable range to 0 and 2 by
pressing 0 ENTER 2 ENTER .
6. Press 2ndF EXE to solve.
7. Pressing CL will return you to the variable screen. You can now change or
solve for any of the values. Save this formula by pressing 2ndF SOLVER ,
C (SAVE) pressing ENTER , and entering the formula name. Give
the formula the name VCYL by pressing V C Y L ENTER .
FORMULAS OR LITERAL EQUATIONS
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