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11—20 of 757 matching pages
11: 1.11 Zeros of Polynomials
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►Set to reduce to , with , .
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, , , .
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►Resolvent cubic is with roots , , , and , , .
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►Let
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►Then , with , is stable iff ; , ; , .
12: 3.4 Differentiation
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►where is as in (3.3.10).
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►If can be extended analytically into the complex plane, then from Cauchy’s integral formula (§1.9(iii))
…where is a simple closed contour described in the positive rotational sense such that and its interior lie in the domain of analyticity of , and is interior to .
Taking to be a circle of radius centered at , we obtain
…The integral on the right-hand side can be approximated by the composite trapezoidal rule (3.5.2).
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13: 9.4 Maclaurin Series
14: 3.3 Interpolation
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►where is a simple closed contour in described in the positive rotational sense and enclosing the points .
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►and are the Lagrangian interpolation coefficients defined by
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►where is given by (3.3.3), and is a simple closed contour in described in the positive rotational sense and enclosing .
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►By using this approximation to as a new point, , and evaluating , we find that , with 9 correct digits.
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►Then by using in Newton’s interpolation formula, evaluating and recomputing , another application of Newton’s rule with starting value gives the approximation , with 8 correct digits.
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15: 26.10 Integer Partitions: Other Restrictions
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►The set is denoted by .
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►Note that , with strict inequality for .
It is known that for , , with strict inequality for sufficiently large, provided that , or ; see Yee (2004).
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►where is the modified Bessel function (§10.25(ii)), and
…The quantity is real-valued.
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16: 14.33 Tables
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Abramowitz and Stegun (1964, Chapter 8) tabulates for , , 5–8D; for , , 5–7D; and for , , 6–8D; and for , , 6S; and for , , 6S. (Here primes denote derivatives with respect to .)
Zhang and Jin (1996, Chapter 4) tabulates for , , 7D; for , , 8D; for , , 8S; for , , 8D; for , , , , 8S; for , , 8S; for , , , 5D; for , , 7S; for , , 8S. Corresponding values of the derivative of each function are also included, as are 6D values of the first 5 -zeros of and of its derivative for , .
Belousov (1962) tabulates (normalized) for , , , 6D.
17: 34 3j, 6j, 9j Symbols
Chapter 34 Symbols
…18: 8 Incomplete Gamma and Related
Functions
Chapter 8 Incomplete Gamma and Related Functions
…19: 26.5 Lattice Paths: Catalan Numbers
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is the Catalan number.
…(Sixty-six equivalent definitions of are given in Stanley (1999, pp. 219–229).)
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26.5.3
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26.5.4
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26.5.7
20: 12.14 The Function
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►For the modulus functions and see §12.14(x).
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►Other expansions, involving and , can be obtained from (12.4.3) to (12.4.6) by replacing by and by ; see Miller (1955, p. 80), and also (12.14.15) and (12.14.16).
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►Here is as in §12.10(ii), is defined by
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►uniformly for , with given by (12.10.23) and given by (12.10.24).
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►uniformly for , with , , , and as in §12.10(vii).
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