** suivant:** Polynomial degree : degree
** monter:** Polynomials
** précédent:** Convert from a symbolic
** Table des matières**
** Index**

##

Coefficients of a polynomial: `coeff coeffs`

`coeff` or `coeffs` takes three arguments : the polynomial,
the name of the variable (or the list of the names of variables) and
the degree (or the list of the degrees of the variables).

`coeff` or `coeffs` returns the coefficient of the polynomial
of the degree given as third argument.
If no degree was specified, `coeffs` return
the list of the coefficients of the polynomial, including 0 in the
univariate dense case and excluding 0 in the multivariate sparse case.

Input :
`coeff(-x``^`

4+3*x*y`^`

2+x,x,1)

Output :
`3*y``^`

2+1

Input :
`coeff(-x``^`

4+3x*y`^`

2+x,y,2)

Output :
`3*x`

Input :
`coeff(-x``^`

4+3x*y`^`

2+x,[x,y],[1,2])

Output :
`3`

giac documentation written by Renée De Graeve and Bernard Parisse