numpy.polynomial.chebyshev.chebline

polynomial.chebyshev. chebline ( off, scl ) [source]

Chebyshev series whose graph is a straight line.

Parameters

off, scl scalars

The specified line is given by off + scl*x.

Returns

y ndarray

This module’s representation of the Chebyshev series for off + scl*x.

See also

numpy.polynomial.polynomial.polyline

numpy.polynomial.legendre.legline

numpy.polynomial.laguerre.lagline

numpy.polynomial.hermite.hermline

numpy.polynomial.hermite_e.hermeline

Examples

>>> import numpy.polynomial.chebyshev as C
>>> C.chebline(3,2)
array([3, 2])
>>> C.chebval(-3, C.chebline(3,2)) # should be -3
-3.0