`numpy.polynomial._polybase:ABCPolyBase`

Signature

def ABCPolyBase(coef, domain = None, window = None, symbol = x)

An abstract base class for immutable series classes.

ABCPolyBase provides the standard Python numerical methods '+', '-', '', '//', '%', 'divmod', '*', and '()' along with the methods listed below.

coef : array_like: Series coefficients in order of increasing degree, i.e., (1, 2, 3) gives 1*P_0(x) + 2*P_1(x) + 3*P_2(x), where P_i is the basis polynomials of degree i.
domain : (2,) array_like, optional: Domain to use. The interval [domain[0], domain[1]] is mapped to the interval [window[0], window[1]] by shifting and scaling. The default value is the derived class domain.
window : (2,) array_like, optional: Window, see domain for its use. The default value is the derived class window.
symbol : str, optional: Symbol used to represent the independent variable in string representations of the polynomial expression, e.g. for printing. The symbol must be a valid Python identifier. Default value is 'x'.
versionadded 1.24