Solving A Literal Equation Using The Graphic Method (Volume Of A Cylinder) - Sharp EL-9900 Handbook Vol. 1 Operation Manual

Solving a Literal Equation Using the Graphic Method
The Solver mode is used to solve one unknown variable by inputting known variables.
There are three methods: Equation, Newton's, and Graphic. The Equation method is used
when an exact solution can be found by simple substitution. Newton's method implements
an iterative approach to find the solution once a starting point is given. When a starting
point is unavailable or multiple solutions are expected, use the Graphic method. This
method plots the left and right sides of the equation and then locates the intersection(s).
Example
Use the Graphic method to find the radius of a cylinder giving the range of the unknown
variable.
The formula : V = r
1.
Find the radius of a cylinder with a volume of 30in
the Graphic method.
2.
Save the formula as "V CYL".
3.
Find the radius of a cylinder with a volume of 200in
using the saved formula.
Before
There may be differences in the results of calculations and graph plotting depending on the setting.
Starting
Return all settings to the default value and delete all data.
As the Solver feature is only available on the Advanced keyboard, this section does not apply to the
Basic keyboard.
Step & Key Operation
1
1
Access the Solver feature.
-
2nd F SOLVER
1
2
- Select the Graphic method for
solving.
A
2nd F SOLVER
3
1
3
Enter the formula V = r
-
ALPHA V ALPHA
x
2
R ALPHA H
1
4
Enter the values: V = 30, H = 10.
-
Solve for the radius (R).
ENTER 3 0 ENTER
0
ENTER
2
h ( V = volume
2
h.
=
2nd F ALPHA
1
2nd F EXE
EL-9900 Graphing Calculator
r = radius h = height)
3
and a height of 10in, using
3
and a height of 15in,
Display
This screen will appear a few
seconds after "SOLVER" is dis-
played.
(Volume of a Cylinder)
Notes
5-2