Difference between revisions of "Relationship between cosh, inverse Gudermannian, and sec"
From specialfunctionswiki
(Created page with "<div class="toccolours mw-collapsible mw-collapsed"> <strong>Theorem:</strong> The following formula holds: $$\cos...") |
(No difference)
|
Revision as of 23:32, 25 August 2015
Theorem: The following formula holds: $$\cosh(\mathrm{gd}^{-1}(x))=\sec(x),$$ where $\cosh$ is the hyperbolic cosine, $\mathrm{gd}^{-1}$ is the inverse Gudermannian, and $\sec$ is the secant.
Proof: █