Sign, Truncate, Xpon – HP 39g Graphing Calculator User Manual
Page 156: Examples, Example, Statistics-two, Statistics-two -18
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
Advertising
SIGN
TRUNCATE
XPON
Sign of value. If positive, the result is 1. If negative, -1. If
zero, result is zero. For a complex number, this is the unit
vector in the direction of the number.
SIGN(vo/«i>)
SIGN((x,>>))
Examples
SIGN ( - 2 ) returns -1
SIGN ( ( 3 , 4 ) ) returns ( . 6 , . 8 )
Trancates value to decimal places. Accepts complex
numbers.
TRUNCATE(va/«e, places)
Example
TRUNCATE ( 2 . 3 6 7 8 , 2 ) returns 2 . 3 6
Exponent of value.
XPOn(value)
Example
XPON (12 3 . 4 ) returns 2
Statistics-Two
These are functions for use with two-variable statistics. See
“Two-variable” on page 8-14.
10-18
Using mathematical functions
Advertising