HCS Hyperbolic Cosine
HCS.1 Introduction |
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Let
be a complex variable of
.The function Hyperbolic Cosine (noted
) is defined by the following second order differential equation
| HCS.1.1 |
The initial conditions of HCS.1.1 are given at
by
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HCS.1.2 |
Related function: Hyperbolic Sine
HCS.2 Series and asymptotic expansions |
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HCS.2.1 Asymptotic expansion at
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HCS.2.1.1 Exact form |
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HCS.2.2 Taylor expansion at
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HCS.2.2.2 General form |
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HCS.2.2.2.1 |

| HCS.2.2.2.2 |
| HCS.2.2.2.3 |
| HCS.2.2.2.4 |