Revision history of "Cosh is even"

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  • (cur | prev) 22:35, 21 October 2017‎ Tom (talk | contribs)‎ . . (331 bytes) (+331)‎ . . (Created page with "==Theorem== The following formula holds: $$\cosh(-z)=\cosh(z),$$ where $\cosh$ denotes hyperbolic cosine. ==Proof== ==References== * {{BookReference|Handbook of mat...")
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