numpy.polynomial.chebyshev.chebadd — NumPy v1.13 Manual (original) (raw)
numpy.polynomial.chebyshev. chebadd(c1, c2)[source]¶
Add one Chebyshev series to another.
Returns the sum of two Chebyshev series c1 + c2. The arguments are sequences of coefficients ordered from lowest order term to highest, i.e., [1,2,3] represents the series T_0 + 2*T_1 + 3*T_2.
| Parameters: | c1, c2 : array_like 1-D arrays of Chebyshev series coefficients ordered from low to high. |
|---|---|
| Returns: | out : ndarray Array representing the Chebyshev series of their sum. |
Notes
Unlike multiplication, division, etc., the sum of two Chebyshev series is a Chebyshev series (without having to “reproject” the result onto the basis set) so addition, just like that of “standard” polynomials, is simply “component-wise.”
Examples
from numpy.polynomial import chebyshev as C c1 = (1,2,3) c2 = (3,2,1) C.chebadd(c1,c2) array([ 4., 4., 4.])