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EL-9650/9600c Graphing Calculator
There may be differences in the results of calculations and graph plotting depending on the setting.
Return all settings to the default value and delete all data.
NotesStep & Key Operation
*Use either pen touch or cursor to operate.
Display
3-2
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).
Solving a Literal Equation Using the Graphic Method
(Volume of a Cylinder)
1. Find the radius of a cylinder with a volume of 30in
3
and a height of 10in, using
the Graphic method.
2. Save the formula as “V CYL”.
3. Find the radius of a cylinder with a volume of 200in
3
and a height of 15in,
using the saved formula.
Use the Graphic method to find the radius of a cylinder giving the range of the unknown
variable.
The formula : V =
π
r
2
h ( V = volume r = radius h = height)
Example
1-1
Access the Solver feature.
Select the Graphic method for
solving.
1-2
*
*
1-3
Enter the formula V =
π
r
2
h.
1-4
Enter the values: V = 30, H = 10.
Solve for the radius (R).
*
*
*
This screen will appear a few
seconds after “SOLVER” is dis-
played.
2nd F
SOLVER
2nd F
SOLVER
2nd F
2nd F EXE
ENTER
ENTER
ENTER
A
3
V
R
x
2
H
30
1
0
=ALPHA ALPHA ALPHA
ALPHA
π
Before
Starting