numpy.polynomial.laguerre.lagadd

numpy.polynomial.laguerre.lagadd(c1, c2) [source]

Add one Laguerre series to another.

Returns the sum of two Laguerre series c1 + c2. The arguments are sequences of coefficients ordered from lowest order term to highest, i.e., [1,2,3] represents the series P_0 + 2*P_1 + 3*P_2.

Parameters

c1, c2array_like

1-D arrays of Laguerre series coefficients ordered from low to high.

Returns

outndarray

Array representing the Laguerre series of their sum.

See also

lagsub, lagmulx, lagmul, lagdiv, lagpow

Notes

Unlike multiplication, division, etc., the sum of two Laguerre series is a Laguerre 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.laguerre import lagadd
>>> lagadd([1, 2, 3], [1, 2, 3, 4])
array([2.,  4.,  6.,  4.])