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Real Part
Imaginary Part
Unit Vector
Exponential
ALOG
EXPM1
LNP1
Trigonometry
CSC
Functions and commands
CONJ(x+y*i)
Example:
CONJ(3+4*i)
Real part x, of a complex number, (x+y*i).
RE(x+y*i)
Example:
returns
RE(3+4*i)
Imaginary part, y, of a complex number, (x+y*i).
IM(x+y*i)
Example:
returns
IM(3+4*i)
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(POLYEVAL[1,2,–25,–26,2],–2)
SIGN((3,4))
Antilogarithm (exponential).
ALOG(value)
Exponent minus 1:
EXPM1(value)
Natural log plus 1: ln(x+1).
LNP1(value)
The trigonometry functions can also take complex numbers as
arguments. For SIN, COS, TAN, ASIN, ACOS, and ATAN,
see "Keyboard functions" on page 285.
Cosecant: 1/sinx.
CSC(value)
returns
(3-4*i)
3
4
returns
(.6,.8)
x
.
e
–
1
returns –1
291
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