Difference between revisions of "Sum of cosh and sinh"
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Revision as of 22:29, 21 October 2017
Theorem
The following formula holds: $$\cosh(z) + \sinh(z) = e^z,$$ where $\cosh$ denotes hyperbolic cosine, $\mathrm{sinh}$ denotes hyperbolic sine, and $e^z$ denotes the exponential.
Proof
References
- 1964: Milton Abramowitz and Irene A. Stegun: Handbook of mathematical functions ... (previous) ... (next): $4.5.19$
