BSJ Bessel J
BSJ.1 Introduction |
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Let
be a complex variable of
and let
denote a parameter (independent of
).The function Bessel J (noted
) is defined by the following second order differential equation
| BSJ.1.1 |
Although
is a singularity of BSJ.1.1, the initial conditions can be given by
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BSJ.1.2 |
The formulae of this document are valid for
BSJ.2 Series and asymptotic expansions |
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BSJ.2.1 Asymptotic expansion at
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BSJ.2.1.2 General form |
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| BSJ.2.1.2.1 |

| BSJ.2.1.2.2 |
| BSJ.2.1.2.3 |
| BSJ.2.1.2.4 |
BSJ.2.2 Asymptotic expansion at
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BSJ.2.2.2 General form |
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BSJ.2.2.2.1 Auxiliary function
The coefficients


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BSJ.2.2.2.2 Auxiliary function
The coefficients


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