EL-9600 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 or to delete all data.
As Solver feature is only available on the EL-9600, this section does not apply to the EL-9400.
Before
Start
Notes
Step & Key Operation
*Use either pen touch or cursor to operate.
Display
3-3
Solver mode is used to solve one unknown variable by inputting known variables. There
are three methods: Equation, Newton’s, and Graphic. The Newton’s method can be used
for more complicated equations. This method implements an iterative approach to find
the solution once a starting point is given.
Solving a Literal Equation Using Newton's Method
(Area of a Trapezoid)
1.
Find the height of a trapezoid with an area of 25in
2
and bases of length 5 in
and 7 in using Newton's method. (Set the starting point to 1.)
2.
Save the formula as “A TRAP”.
3.
Find the height of a trapezoid with an area of 50in
2
with bases of 8 and 10
using the saved formula. (Set the starting point to 1.)
Find the height of a trapezoid from the formula for calculating the area of a trapezoid
useing Newton’s method.
The formula :
A=
h
(
b+c
)
Example
1
-
1
Access the Solver feature.
Select Newton's method
for solving.
1
-
2
*
*
1
-
3
Enter the formula A
=
h
(
b+c
)
.
*
1
2
(
A
= area
h
= height
b
= top face
c
= bottom face)
1
2
*
*
*
Enter the values: A = 25, B = 5, C = 7
1
-
4
This screen will appear a few
seconds after “SOLVER” is dis-
played.
2nd F SOLVER
2nd F SOLVER
A
ALPHA
A
2
ALPHA
1
a/b
2
ALPHA
H
ALPHA
ALPHA
ENTER
=
ENTER
ENTER
ENTER
(
+
)
C
2
5
5
7
B
HB1.DocB.
98.10.1, 11:30 AM
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