numpy.polynomial.Polynomial.fromroots ¶
method
 classmethod Polynomial. fromroots ( roots , domain = [] , window = None ) ¶

Return series instance that has the specified roots.
Returns a series representing the product
(x  r[0])*(x  r[1])*...*(x  r[n1])
, wherer
is a list of roots. Parameters

 roots array_like

List of roots.
 domain {[], None, array_like}, optional

Domain for the resulting series. If None the domain is the interval from the smallest root to the largest. If [] the domain is the class domain. The default is [].
 window {None, array_like}, optional

Window for the returned series. If None the class window is used. The default is None.
 Returns

 new_series series

Series with the specified roots.