Sharp EL-9900 Handbook Vol. 1 Operation Manual page 16

Step & Key Operation
1
5
Set the variable range from 0 to 2.
-
0 2
ENTER ENTER
1
6
Solve.
-
(
CL
2nd F EXE
2
Save this formula.
Give the formula the name "V CYL".
C
2nd F SOLVER ENTER
V C Y
SPACE
3
Recall the formula.
1
-
Enter the values: V = 200, H = 15.
B 0
2nd F SOLVER
2 0 0
ENTER
1 5
ENTER
Solve the radius setting the variable
3
2
-
range from 0 to 4.
2nd F EXE
ENTER 2nd F EXE
One very useful feature of the calculator is its ability to store and recall equations.
The solution from various values for known variables can be easily obtained by
recalling an equation which has been stored and giving values to the known
variables. The Graphic method gives a visual solution by drawing a graph.
5-2
)
L
ENTER
1
0
ENTER ENTER
0 4
ENTER
EL-9900 Graphing Calculator
Display
The graphic solver will prompt
with a variable range for solv-
ing.
30
2
r =
10
r =1
r =2
Use the larger of the values to
be safe.
The solver feature will graph
the left side of the equation
(volume, y = 30), then the right
side of the equation (y = 10r
and finally will calculate the
intersection of the two graphs
to find the solution.
The radius is 0.98 in.
200
2
r =
15
r = 3
r = 4
Use 4, the larger of the values,
to be safe.
The answer is : r = 2.06
Notes
3
= <3
2 = 1 2 = 1 <3
r
2 2
r = 2 = 4 >3
2
),
14
= < 14
2 2
r = 3 = 9 < 14
r 2 = 4 2 = 16 > 14