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Step & Key Operation Display
Notes
EL-9900 Graphing Calculator
5-3
Enter the values:
A = 50, B = 8, C = 10.
3-2
Newton's method will
prompt with a guess or a
starting point.
1-5 Solve for the height and enter a
starting point of 1.
The answer is : h = 4.17
Solve.
1-6
(
)
Save this formula. Give the formula
the name “A TRAP”.
2
Recall the formula for calculating
the area of a trapezoid.
3-1
The answer is : h = 5.56Solve.
3-3
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 in the Solver mode. If a starting point is known, Newton's method is
useful for quick solution of a complicated equation.
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
2nd F EXE
2nd F EXE
2nd F EXE
2nd F EXE
1
50
10
01
8
B
T
AP
A
C
1
CL
2nd F
SOLVER
SPACE
2nd F
SOLVER
R