# Constants - HP 39gII User Manual

Graphing calculator.

ARG
CONJ
IM
RE

## Constants

e
Using mathematical functions
(x+y*i), where x is the real part and y is the imaginary
part.
Argument. Finds the angle defined by a complex number.
Inputs and outputs use the current angle format set in
Modes.
ARG((x+y*i))
Example:
ARG(3+3*i) returns 45 (Degrees mode)
Complex conjugate. Conjugation is the negation (sign
reversal) of the imaginary part of a complex number.
CONJ((x+y*i))
Example:
CONJ(3+4*i) returns (3-4*i)
Imaginary part, y, of a complex number, (x+y*i).
IM ((x+y*i))
Example:
IM(3+4*i) returns 4
Real part x, of a complex number, (x+y*i).
RE((x+y*i))
Example:
RE(3+4*i) returns 3
The constants available from the Math Functions menu
are mathematical constants. These are described in this
section. The HP 39gII has two other menus of constants:
program constants and physical constants. The physical
constants are described further on in this chapter, while
the program constants are described in the programming
chapter.
Natural logarithm base. Internally represented as
2.71828182846.
e
161  