Sharp EL9900C EL-9900C - Page 207

Chapter 12: The SOLVER Feature Note: 6. The following window shows the approximate value of X (0.449489742), the right side value of the equation (assumed as "0", at step #2), the left side value (which the entered expression results to this value when the value X is entered), and the difference between the left and the right side. 7. Since the L-R difference above indicates a margin of error, try entering smaller steps. Press C to go back to step #3. Enter the value of X, then press @ h to execute the SOLVER again. When the next window appears, try entering smaller step value ("0.00001", for example). 8. Press E to register the step value change, then @ h. Although the value of X appears to be unchanged, the margin of error will have become small enough ("0", in this example), to be as close to zero as possible. As you may well know, there may be more than one solution to the equation. To obtain the value of the other solutions, set the starting point of Newton's method lower ("-10", for example) or execute the SOLVER again with the current solution as a starting point. 197