Statistics-Two - HP 39G User Manual

SIGN
TRUNCATE
XPON

Statistics-Two

10-18
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(value)
SIGN((x,y))
Examples
SIGN (–2) returns –1
SIGN((3,4)) returns (.6,.8)
Truncates value to decimal places. Accepts complex
numbers.
TRUNCATE(value,places)
Example
TRUNCATE(2.3678,2) returns 2.36
Exponent of value.
XPON(value)
Example
XPON(123.4) returns 2
These are functions for use with two-variable statistics. See
"Two-variable" on page 8-14.
Using mathematical functions