approximations
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11: 9.19 Approximations
§9.19 Approximations
►§9.19(i) Approximations in Terms of Elementary Functions
►Martín et al. (1992) provides two simple formulas for approximating to graphical accuracy, one for , the other for .
§9.19(ii) Expansions in Chebyshev Series
… ►§9.19(iii) Approximations in the Complex Plane
…12: 6.20 Approximations
§6.20 Approximations
►§6.20(i) Approximations in Terms of Elementary Functions
… ►Cody and Thacher (1968) provides minimax rational approximations for , with accuracies up to 20S.
Cody and Thacher (1969) provides minimax rational approximations for , with accuracies up to 20S.
MacLeod (1996b) provides rational approximations for the sine and cosine integrals and for the auxiliary functions and , with accuracies up to 20S.
13: 34.8 Approximations for Large Parameters
§34.8 Approximations for Large Parameters
… ►Semiclassical (WKBJ) approximations in terms of trigonometric or exponential functions are given in Varshalovich et al. (1988, §§8.9, 9.9, 10.7). Uniform approximations in terms of Airy functions for the and symbols are given in Schulten and Gordon (1975b). For approximations for the , , and symbols with error bounds see Flude (1998), Chen et al. (1999), and Watson (1999): these references also cite earlier work.14: 8.16 Generalizations
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►For a generalization of the incomplete gamma function, including asymptotic approximations, see Chaudhry and Zubair (1994, 2001) and Chaudhry et al. (1996).
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15: 12.20 Approximations
§12.20 Approximations
…16: 18.29 Asymptotic Approximations for -Hahn and Askey–Wilson Classes
§18.29 Asymptotic Approximations for -Hahn and Askey–Wilson Classes
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18.29.2
; fixed.
►For a uniform asymptotic expansion of the Stieltjes–Wigert polynomials, see Wang and Wong (2006).
►For asymptotic approximations to the largest zeros of the -Laguerre and continuous -Hermite polynomials see Chen and Ismail (1998).
17: 2 Asymptotic Approximations
Chapter 2 Asymptotic Approximations
…18: 9.14 Incomplete Airy Functions
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►For information, including asymptotic approximations, computation, and applications, see Levey and Felsen (1969), Constantinides and Marhefka (1993), and Michaeli (1996).
19: Edward Neuman
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►Neuman has published several papers on approximations and expansions, special functions, and mathematical inequalities.
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