Sharp EL-9900 User Manual

Page 208

198

Chapter 12: The SOLVER Feature

The Graphic method is another way of approximating solutions,

using graphical representations. This method is particularly useful

when finding more than one solution on a graph axis.

Example

Obtain values for “Y = X

–

1”, when Y = 0.

1. Press

@ ' to enter SOLVER. Clear screen entries by

pressing

C several times.

2. Enter “Y = X

–

1” into

the initial window, and press
E.

3. In the next window, set the Y

value as “0”, and press
E. The right side value
of the equation is now set.

Note:

Unlike in the Newton’s method,

the X value will not be assumed

as the starting point for the

Graphic method.

4. Before proceeding further,

you will need to set the

SOLVER to the Graphic

method. Press

@ '

to call up the SOLVER

menu, and press

A (for

“A METHOD”), then

3 (for “3 Graphic”). The Graphic

method is now set.

5. Press

@ h to proceed.

6. Next in the following window,

specify the range of analysis

that will incorporate all

possible solution. In this

example, we will set the

beginning point at “

1”, and

the end point at “3”. Press

E at each variable entry.

Graphic method