DLMF:4.21.E42 (Q1746): Difference between revisions

Revision as of 18:29, 1 January 2020

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Language	Label	Description	Also known as
English	DLMF:4.21.E42	No description defined

{\displaystyle{\displaystyle|\cos z|=({\cos^{2}}x+{\sinh^{2}}y)^{1/2}=\left(% \tfrac{1}{2}(\cosh\left(2y\right)+\cos\left(2x\right))\right)^{1/2},}}

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DLMF:4.21.E42

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{\displaystyle{\displaystyle\cos\NVar{z}}}

C4.S14.E2.m2aaddec

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@@ Property / Symbols used @@
+cosine function
@@ Property / Symbols used: cosine function / rank @@
+Normal rank
@@ Property / Symbols used: cosine function / qualifier @@
+Defining formula:  ${\displaystyle{\displaystyle\cos\NVar{z}}}$ 
\cos@@{\NVar{z}}
@@ Property / Symbols used: cosine function / qualifier @@
+xml-id: C4.S14.E2.m2aaddec