…
►
§13.29(ii) Differential Equations
►A comprehensive and powerful approach is
to integrate the
differential equations (
13.2.1) and (
13.14.1) by direct numerical methods.
…
►The recurrence
relations in §§
13.3(i) and
13.15(i) can be used
to compute the confluent
hypergeometric functions in an efficient way.
…
►normalizing
relation
…
►normalizing
relation
…
…
►
§33.23(i) Methods for the Confluent Hypergeometric Functions
…
►
§33.23(iii) Integration of Defining Differential Equations
…
►
§33.23(iv) Recurrence Relations
►In a similar manner
to §
33.23(iii) the recurrence
relations of §§
33.4 or
33.17 can be used for a range of values of the integer
, provided that the recurrence is carried out in a stable direction (§
3.6).
…
►Noble (2004) obtains double-precision accuracy for
for a wide range of parameters using a combination of recurrence techniques, power-series expansions, and numerical quadrature; compare (
33.2.7).
…
…
►
§33.2(i) Coulomb Wave Equation
…
►This
differential equation has a regular singularity at
with indices
and
, and an irregular singularity of rank 1 at
(§§
2.7(i),
2.7(ii)).
…
►The function
is recessive (§
2.7(iii)) at
, and is defined by
…where
and
are defined in §§
13.14(i) and
13.2(i), and
…
►The functions
are defined by
…
§17.13 Integrals
…
►
17.13.1
…
►
Ramanujan’s Integrals
►
17.13.3
…
►Askey (1980) conjectured extensions of the foregoing integrals that are closely
related to Macdonald (1982).
…
…
►Barrett (1981) supplies asymptotic approximations for numerically satisfactory pairs of solutions of both Mathieu’s
equation (
28.2.1) and the modified Mathieu
equation (
28.20.1).
…It is stated that corresponding uniform approximations can be obtained for other solutions, including the eigensolutions, of the
differential equations by application of the results, but these approximations are not included.
…
►Dunster (1994a) supplies uniform asymptotic approximations for numerically satisfactory pairs of solutions of Mathieu’s
equation (
28.2.1).
…
►The approximations are expressed in terms of Whittaker functions
and
with
; compare §
2.8(vi).
…
►For
related results see
Langer (1934) and
Sharples (1967, 1971).
…