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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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