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Scilab help >> Scilab > varn

varn

symbolic variable of a polynomial

Calling Sequence

[symb]=varn(p)
[pm]=varn(x,var)

Arguments

p

polynomial (or matrix polynomial)

symb

character string

x

polynomial or polynomial matrix

var

symbolic variable (character string)

pm

matrix or polynomial matrix

Description

symb=varn(p) returns in symb the symbolic variable of the polynomial p (i.e. varn(poly(0,'x')) is 'x').

varn(x,'s') returns a polynomial matrix with same coefficients as x but with 's' as symbolic variable (change of variable name).

Examples

s=poly(0,'s');p=[s^2+1,s];
varn(p)
varn(p,'x')

See Also

  • horner — polynomial/rational evaluation
  • poly — polynomial definition
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Last updated:
Wed Oct 05 12:09:25 CEST 2011