Formula:2253

Digital Library of Mathematical Functions ID 4.35.E12

${\displaystyle{\displaystyle{\operatorname{sech}^{2}}z=1-{\tanh^{2}}z,}}$

Symbols List

• ${\displaystyle{\displaystyle\operatorname{sech}\NVar{z}}}$: hyperbolic secant function
• ${\displaystyle{\displaystyle\tanh\NVar{z}}}$: hyperbolic tangent function
• ${\displaystyle{\displaystyle z}}$: complex variable
 

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