Sharp EL-5250 User Manual
6
Appendix ............................................................115
Battery Replacement ........................................................................... 115
Batteries used .............................................................................. 115
Notes on battery replacement ..................................................... 115
When to replace the batteries ...................................................... 115
Cautions ....................................................................................... 116
Replacement procedure ............................................................... 116
Automatic power off function ........................................................ 117
The OPTION menu .............................................................................. 118
The OPTION display .................................................................... 118
Contrast ........................................................................................ 118
Memory check .............................................................................. 118
Deleting equation files and programs .......................................... 119
If an Abnormal Condition Occurs ........................................................ 119
Error Messages .................................................................................... 120
Using the Solver Function Effectively .................................................. 121
Newton’s method .......................................................................... 121
‘Dead end’ approximations ........................................................... 121
Range of expected values ............................................................ 121
Calculation accuracy .................................................................... 122
Changing the range of expected values ...................................... 122
Equations that are difficult to solve .............................................. 123
Technical Data ..................................................................................... 124
Calculation ranges ....................................................................... 124
Memory usage ............................................................................. 126
Priority levels in calculations ........................................................ 127
Specifications ....................................................................................... 128
For More Information about Scientific Calculators .............................. 129
Contents