DLMF:4.28.E2 (Q1839): Difference between revisions

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Property / Symbols defined: hyperbolic cosine function / rank
 
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Revision as of 14:58, 30 December 2019

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DLMF:4.28.E2
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    cosh z = e z + e - z 2 , 𝑧 superscript 𝑒 𝑧 superscript 𝑒 𝑧 2 {\displaystyle{\displaystyle\cosh z=\frac{e^{z}+e^{-z}}{2},}}
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