(If you receive an error message while using the Newton Solver, set the START
value at your estimate of the solution and try slightly increasing the STEP
value.) The method is continued until the left side and right side of the equation
are within a defined tolerance.
Since the left and right sides of the equation are displayed as equal values, and
the L – R = 0, the NEWTON SOLVER has found a solution that is correct to the
limits of the calculator’s accuracy.
Method of Teaching
Use Blackline Master 8.1 to create an overhead or handout for using the Graphic
Solver with the Law of Sines. Use Blackline Master 8.2 to create an overhead or
handout for using the Newton Solver with the Law of Cosines. Demonstrate the
procedure to store each of these equations in the calculator memory for later recall.
Next, use Blackline Master 8.3 to create a worksheet for the students. Remind
them that some problems may be solved by a variety of methods. If information
is not available to obtain a good estimate of START in the Newton Solver,
students may find it more convenient to work with the Graphic Solver.
Use the topics For Discussion to supplement the worksheets. Retrieving
(loading) and renaming equations that have been stored in the calculator
is discussed in the owner's manual.
Law of Sines and Law of Cosines/TRIGONOMETRY USING THE SHARP EL-9600 39
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