public static MultivariatePolynomial Pow(MultivariatePolynomial poly, int exponent)
{
if (exponent < 0)
{
throw new NotImplementedException("Raising a polynomial to a negative exponent not supported.");
}
else if (exponent == 0)
{
return(new MultivariatePolynomial(new Term[] { new Term(1, new Indeterminate[0]) }));
}
else if (exponent == 1)
{
return(poly.Clone());
}
MultivariatePolynomial result = poly.Clone();
int counter = exponent - 1;
while (counter != 0)
{
result = MultivariatePolynomial.Multiply(result, poly);
counter -= 1;
}
return(new MultivariatePolynomial(result.Terms));
}
public static MultivariatePolynomial Product(IEnumerable <MultivariatePolynomial> polys)
{
MultivariatePolynomial result = null;
foreach (MultivariatePolynomial p in polys)
{
if (result == null)
{
result = p.Clone();
}
else
{
result = MultivariatePolynomial.Multiply(result, p);
}
}
return(result);
}
