DLMF:4.35.E19

MaRDI QIDQ2267

• Label: DLMF:4.35.E19

Digital Library of Mathematical Functions ID 4.35.E19

${\displaystyle{\displaystyle{\sinh^{2}}u+{\cosh^{2}}v=\cosh\left(u+v\right)\cosh\left(u-v\right).}}$

Symbols List

• ${\displaystyle{\displaystyle\cosh\NVar{z}}}$: hyperbolic cosine function
• ${\displaystyle{\displaystyle\sinh\NVar{z}}}$: hyperbolic sine function
 

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