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lagsub(c1, c2)

Returns the difference of two Laguerre series :None:None:`c1` - :None:None:`c2`. The sequences of coefficients are from lowest order term to highest, i.e., [1,2,3] represents the series P_0 + 2*P_1 + 3*P_2 .

Notes

Unlike multiplication, division, etc., the difference of two Laguerre series is a Laguerre series (without having to "reproject" the result onto the basis set) so subtraction, just like that of "standard" polynomials, is simply "component-wise."

Parameters

c1, c2 : array_like: 1-D arrays of Laguerre series coefficients ordered from low to high.

Returns

out : ndarray: Of Laguerre series coefficients representing their difference.

Subtract one Laguerre series from another.

Examples

>>> from numpy.polynomial.laguerre import lagsub
... lagsub([1, 2, 3, 4], [1, 2, 3])
array([0.,  0.,  0.,  4.])

See :

Back References

The following pages refer to to this document either explicitly or contain code examples using this.

numpy.polynomial.laguerre.lagmulx numpy.polynomial.laguerre.lagpow numpy.polynomial.laguerre.lagmul numpy.polynomial.laguerre.lagdiv numpy.polynomial.laguerre.lagadd

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