HP 39g+, Руководство пользователя

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Using mathematical functions 11-7
TAYLOR
Calculates the n th order Taylor polynomial of expression
at the point where the given variable = 0.
TAYLOR
( expression, variable, n )
Example
TAYLOR(1 + sin(s1)
2
,s1,5)
with Radians
angle measure and Fraction number format (set in
MODES) returns
1+s1^2-1/3*s1^4
.
Complex number functions
These functions are for complex numbers only. You can
also use complex numbers with all trigonometric and
hyperbolic functions, and with some real-number and
keyboard functions. Enter complex numbers in the form
(
x,y
), where
x
is the real part and
y
is the imaginary part.
ARG
Argument. Finds the angle defined by a complex number.
Inputs and outputs use the current angle format set in
Modes.
ARG
((
x, y
))
Example
ARG((3,3))
returns
45
(Degrees mode)
CONJ
Complex conjugate. Conjugation is the negation (sign
reversal) of the imaginary part of a complex number.
CONJ
((
x, y
))
Example
CONJ((3,4))
returns
(3,-4)
IM
Imaginary part, y, of a complex number, (
x, y
).
IM
((
x, y
))
Example
IM((3,4))
returns
4
RE
Real part
x
, of a complex number, (
x, y
).
RE
((
x, y
))
Example
RE((3,4))
returns
3