lagmulx(c)

Multiply the Laguerre series c by x, where x is the independent variable.

Notes

The multiplication uses the recursion relationship for Laguerre polynomials in the form

$$xP_i(x) = (-(i + 1)*P_{i + 1}(x) + (2i + 1)P_{i}(x) - iP_{i - 1}(x))$$

Parameters

c : array_like

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

Returns

out : ndarray

Array representing the result of the multiplication.

Multiply a Laguerre series by x.

See Also

lagadd

lagdiv

lagmul

lagpow

lagsub

Examples

>>> from numpy.polynomial.laguerre import lagmulx
... lagmulx([1, 2, 3])
array([-1.,  -1.,  11.,  -9.])

See :

Back References

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

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

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