Absolute And Signum Functions - Texas Instruments TI-95 User Manual

Absolute and Signum Functions £
You can use the calculator to determinethe absolute value
and signum function of a number.
Absolute
Values
Example
Signum
Function
Selecting <ABS) from the NUMBER FUNCTIONS menu
changes the numberin the displaytoits absolute value.
Calculate |3 = 10-2] x 11.
Procedure Press Display
Clear display 0.
Perform thecalculation [ ( ] 3 [=] 10
El2D) -17
Calculate the absolute [NUM]
value coe
<ABS> 17
Multiply the absolute
value by 11 1) 18.7
Selecting <SGN> from the NUMBER FUNCTIONS menu
determines the sign of the numberin the display and
results in either a 1 or — 1, depending onthe sign.
Value in Display Signum
Oor greater 1
Less than 0. 4
For example, if the display contains — 0.941863 and you
press [NUM] <-->) <SGN), the calculatordisplays — 1.
2-32 Math Operations