HASC Inverse Hyperbolic Secant
HASC.1 Introduction |
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Let
be a complex variable of
.The function Inverse Hyperbolic Secant (noted
) is defined by the following second order differential equation
| HASC.1.1 |
The initial conditions of HASC.1.1 at
are not simple to state, since
is a (regular) singular point.
Related functions: Inverse Secant,Inverse Cosecant
HASC.2 Series and asymptotic expansions |
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HASC.2.1 Asymptotic expansion at
|
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HASC.2.1.2 General form |
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| HASC.2.1.2.1 |

| HASC.2.1.2.2 |
| HASC.2.1.2.3 |