# Polynomials¶

## Polynomial Package¶

### Polynomial Module¶

 cupy.polynomial.polynomial.polyvander Computes the Vandermonde matrix of given degree. cupy.polynomial.polynomial.polycompanion Computes the companion matrix of c.

### Polyutils¶

 cupy.polynomial.polyutils.as_series Returns argument as a list of 1-d arrays. cupy.polynomial.polyutils.trimseq Removes small polynomial series coefficients. cupy.polynomial.polyutils.trimcoef Removes small trailing coefficients from a polynomial.

## Poly1d¶

### Basics¶

 cupy.poly1d A one-dimensional polynomial class. cupy.polyval Evaluates a polynomial at specific values. cupy.roots Computes the roots of a polynomial with given coefficients.

### Arithmetic¶

 cupy.polyadd Computes the sum of two polynomials. cupy.polysub Computes the difference of two polynomials. cupy.polymul Computes the product of two polynomials.