Fourier, Froots, R(arith) – HP 49g Graphing Calculator User Manual
Page 146
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Flags:
Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
Example:
Find the rational polynomial corresponding to the
following set of roots and poles:
1 , 2 , 3 , - 1
Command:
FCOEF{ [ 1 , 2 , 3 , - 1 ]
)
Result:
( X - 1 ) ^ 2 / ( X - 3 )
See also:
FROOTS
FOURIER
Type:
Fimction
Description:
Returns the coefficient of a complex Fourier series
expansion. The
PERIOD
variable must be in the current
path, and set to hold L, the period of the input fimction.
Access:
Calculus 0(CALQ)
deriv
. &
integ
Input:
Level 1/Argument 2: An expression
Level 2/Argument 1: The number, n, of the coefficient to
return.
Output:
The uth Fourier coefficient of the expression.
Flags:
Exact mode must be set (flag -105 clear).
Numeric mode must not be set (flag -03 clear).
Complex mode must be set, that is, flag -103 must be
set.
FROOTS
Type:
Command
Description:
For a rational polynomial, returns an array of its roots
and poles, with their corresponding multiplicities.
Access:
Aiithmetic,
R(ARiTH)
POLYNOMIAI,
Input:
A rational polynomial.
Output:
An array of the form [Root 1, Multiplicity 1, Root 2,
Multiplicity 2 . . . ]
A negative multiplicity indicates a pole.
Flags:
Exact mode must be set (flag -105 clear). Numeric mode
must not be set (flag -03 clear).
Computer Algebra Commands
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