real case
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11: 32.11 Asymptotic Approximations for Real Variables
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►Consider the special case of with :
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►Any nontrivial real solution of (32.11.12) satisfies
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►In the case when
…where is a nonzero real constant.
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►In the generic case
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12: 8.2 Definitions and Basic Properties
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►However, when the integration paths do not cross the negative real axis, and in the case of (8.2.2) exclude the origin, and take their principal values; compare §4.2(i).
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13: 23.4 Graphics
14: 14.13 Trigonometric Expansions
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►These Fourier series converge absolutely when .
If then they converge, but, if , they do not converge absolutely.
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15: 19.20 Special Cases
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►When the variables are real and distinct, the various cases of are called circular (hyperbolic) cases if is positive (negative), because they typically occur in conjunction with inverse circular (hyperbolic) functions.
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16: 12.14 The Function
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►This equation is important when and
are real, and we shall assume this to be the case.
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►In this case there are no real turning points, and the solutions of (12.2.3), with replaced by , oscillate on the entire real
-axis.
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17: 10.41 Asymptotic Expansions for Large Order
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►In the case of (10.41.13) with positive real values of the result is a consequence of the error bounds given in Olver (1997b, pp. 377–378).
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18: 19.29 Reduction of General Elliptic Integrals
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►Cubic cases of these formulas are obtained by setting one of the factors in (19.29.3) equal to 1.
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►All other cases are integrals of the second kind.
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►In the cubic case () the basic integrals are
…In the quartic case () the basic integrals are
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►A special case of Carlson (1999, (2.19)) is given by
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19: 2.8 Differential Equations with a Parameter
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►There are three main cases.
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►for Case I,
…for Case II,
…for Case III.
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►In Case III the approximating equation is
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20: 18.40 Methods of Computation
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►Given the power moments, , , can these be used to find a unique , a non-decreasing, real, function of , in the case that the moment problem is determined? Should a unique solution not exist the moment problem is then indeterminant.
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►In what follows we consider only the simple, illustrative, case that is continuously differentiable so that , with
real, positive, and continuous on a real interval The strategy will be to: 1) use the moments to determine the recursion coefficients of equations (18.2.11_5) and (18.2.11_8); then, 2) to construct the quadrature abscissas and weights (or Christoffel numbers) from the J-matrix of §3.5(vi), equations (3.5.31) and(3.5.32).
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