numpy.polynomial.polynomial.polyadd#
- 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, c2array_like
1-D arrays of polynomial coefficients ordered from low to high.
- Returns:
- outndarray
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