chebsub(c1, c2)
Returns the difference of two Chebyshev series c1 - c2. The sequences of coefficients are from lowest order term to highest, i.e., [1,2,3] represents the series T_0 + 2*T_1 + 3*T_2.
Unlike multiplication, division, etc., the difference of two Chebyshev series is a Chebyshev series (without having to "reproject" the result onto the basis set) so subtraction, just like that of "standard" polynomials, is simply "component-wise."
1-D arrays of Chebyshev series coefficients ordered from low to high.
Of Chebyshev series coefficients representing their difference.
Subtract one Chebyshev series from another.
from numpy.polynomial import chebyshev as C
c1 = (1,2,3)
c2 = (3,2,1)
C.chebsub(c1,c2)
C.chebsub(c2,c1) # -C.chebsub(c1,c2)
The following pages refer to to this document either explicitly or contain code examples using this.
numpy.polynomial.chebyshev:chebmul
numpy.polynomial.chebyshev:chebpow
numpy.polynomial.chebyshev:chebdiv
numpy.polynomial.chebyshev:chebadd
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