Sharp EL-9900 operation manual Precedence of Calculations

Chapter 2: Operating the Graphing Calculator

Notes: Immediately after changing the EDITOR, the calculator will return to the calculation screen and the following data will be cleared.

•ENTRY memory

•Equations stored in the graph equation window (Y)

•Equations temporally stored in the SOLVER window (@ ')

*Resetting to the default settings (@pE1) will also clear the above data.

Expression of up to 114 bytes can be enetered in the Equation edit mode. If the expression exceed the screen width, it is horizontally extended.

Expression of up to 160 bytes can be entered in One-line edit mode. if the expression exceed the screen width, it goes to the next line.

SIMPLE: Sets the preference for handling reducible fractions.

Auto Fractions will automatically be reduced down (default)

Manual Fractions will not be reduced unless Qis pressed

Note: All the procedures in this manual are explained using the default settings unless otherwise specified.

Precedence of Calculations

When solving a mathematical expression, this calculator inter- nally looks for the following figures and methods (sorted in the order of evaluation):

1)Fractions (1/4, a/b, , etc.)

2)Complex angles (∠)

3)Single calculation functions before a numerical value (X2, X-1, !, “ ° ”, “ r ”, and “ g ”)

4) Exponential functions (ab, a , etc)

5)Multiplications between a value and a stored variable/con- stant, with “⋅” abbreviated (2π, 2A, etc.)

6)Single calculation functions after a numerical value (sin, cos, tan, sin-1, cos-1, tan-1, log, 10x, ln, ex, , abs, int, ipart, fpart, (–), not, neg, etc.)

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