Access: …µFAST3D

Input/Output: None

See also: BAR, CONIC, DIFFEQ, FUNCTION, GRIDMAP, HISTOGRAM, PARAMETRIC, PARSURFACE, PCONTOUR, POLAR, SCATTER, SLOPEFIELD, TRUTH, WIREFRAME, YSLICE

FCOEF

Type: Command

Description: From an array of roots and multiplicities/poles, returns a rational polynomial with a leading coefficient of 1, with the specified set of roots or poles, and with the specified multiplicities.

Access: Arithmetic, !ÞPOLY L

Input: An array of the form [Root 1, multiplicity/pole 1, Root 2, multiplicity/pole 2, . . .] The multiplicity/pole must be an integer. A positive number signifies a multiplicity. A negative number signifies a pole.

Output: The rational polynomial with the specified roots and multiplicities/poles. The polynomial is written using the current independent variable.

Flags: Exact mode must be set (flag –105 clear). Numeric mode must not be set (flag –3 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

 

 

 

 

 

 

 

FC?

Command

 

 

Type:

 

 

Description:

Flag Clear? Command: Tests whether the system or user flag specified by nflag number is clear, and

 

returns a corresponding test result: 1 (true) if the flag is clear or 0 (false) if the flag is set.

Access:

!°TEST LLFC?

( °is the left-shift of the Nkey).

 

!°LMODES FLAG FC?

( °is the left-shift of the Nkey).

 

!&HFLAG FC?

 

 

Input/Output:

 

 

 

 

 

 

 

 

 

 

 

Level 1/Argument 1

 

Level 1/Item 1

 

 

 

 

 

 

 

nflag number

→

0/1

 

 

 

 

 

See also:

CF, FC?C, FS? FS?C, SF

 

 

 

 

 

 

 

FC?C

Command

 

 

Type:

 

 

Description: Flag Clear? Clear Command: Tests whether the system or user flag specified by nflag number is clear, and returns a corresponding test result: 1 (true) if the flag is clear or 0 (false) if the flag is set. After

testing, clears the flag.

Access: !°TEST LLFC?C

( °is the left-shift of the Nkey).

!°LMODES FLAG FC?C

( °is the left-shift of the Nkey).

!&HFLAG FC?C

 

Full Command and Function Reference 3-85