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18
Orthogonal Polynomials
Computation
18.40
Methods of Computation
18.40
Methods of Computation
18.41
Tables
Figure 18.40.2
(See
in context
.)
Figure 18.40.2:
Derivative Rule inversions for
w
RCP
(
x
)
carried out via Lagrange and PWCF interpolations. Shown are the absolute errors of approximation (
18.40.8
) at the points
x
i
,
N
,
i
=
1
,
2
,
…
,
N
for
N
=
40
. For the derivative rule Lagrange interpolation (red points) gives
∼
15
digits in the central region, while PWCF interpolation (blue points) gives
∼
25
.
ⓘ
Annotations:
Symbols:
N
: positive integer
,
w
(
x
)
: weight function
and
x
: real variable
Permalink:
http://dlmf.nist.gov/18.40.F2.mag
Encodings:
Magnified png
,
pdf
See also:
Annotations for
§18.40
and
Ch.18