Formula:2247

Digital Library of Mathematical Functions ID 4.35.E9

${\displaystyle{\displaystyle\tanh u\pm\tanh v=\frac{\sinh\left(u\pm v\right)}{\cosh u\cosh v},}}$

Symbols List

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

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