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11: 10.36 Other Differential Equations
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►The quantity in (10.13.1)–(10.13.6) and (10.13.8) can be replaced by if at the same time the symbol in the given solutions is replaced by .
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10.36.1
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10.36.2
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►Differential equations for products can be obtained from (10.13.9)–(10.13.11) by replacing by .
12: 28.8 Asymptotic Expansions for Large
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►The approximations apply when the parameters and are real and large, and are uniform with respect to various regions in the -plane.
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►They are uniform with respect to when , where is an arbitrary constant such that , and also with respect to in the semi-infinite strip given by and .
►The approximations are expressed in terms of Whittaker functions and with ; compare §2.8(vi).
…With additional restrictions on , uniform asymptotic approximations for solutions of (28.2.1) and (28.20.1) are also obtained in terms of elementary functions by re-expansions of the Whittaker functions; compare §2.8(ii).
►Subsequently the asymptotic solutions involving either elementary or Whittaker functions are identified in terms of the Floquet solutions (§28.12(ii)) and modified Mathieu functions (§28.20(iii)).
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13: 22.13 Derivatives and Differential Equations
14: 7.4 Symmetry
15: 22.10 Maclaurin Series
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§22.10(i) Maclaurin Series in
… ►The full expansions converge when . … ►
22.10.4
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22.10.5
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22.10.8
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16: 4.20 Derivatives and Differential Equations
17: 4.33 Maclaurin Series and Laurent Series
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4.33.1
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4.33.2
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4.33.3
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►For expansions that correspond to (4.19.4)–(4.19.9), change to and use (4.28.8)–(4.28.13).
18: 4.6 Power Series
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4.6.1
, ,
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4.6.3
, ,
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4.6.4
, ,
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►valid when is any real or complex constant and .
If , then the series terminates and is unrestricted.
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