numpy.polynomial.polynomial.polyadd — NumPy v1.11 Manual (original) (raw)
numpy.polynomial.polynomial.polyadd(c1, c2)[source]¶
Add one polynomial to another.
Returns the sum of two polynomials c1 + c2. The arguments are sequences of coefficients from lowest order term to highest, i.e., [1,2,3] represents the polynomial 1 + 2*x + 3*x**2.
| Parameters: | c1, c2 : array_like 1-D arrays of polynomial coefficients ordered from low to high. |
|---|---|
| Returns: | out : ndarray The coefficient array representing their sum. |
Examples
from numpy.polynomial import polynomial as P c1 = (1,2,3) c2 = (3,2,1) sum = P.polyadd(c1,c2); sum array([ 4., 4., 4.]) P.polyval(2, sum) # 4 + 4(2) + 4(2**2) 28.0