Derivative of Hyperbolic Secant

Theorem

 * $\map {\dfrac \d {\d x} } {\sech x} = -\sech x \tanh x$

where $\tanh$ is the hyperbolic tangent and $\sech$ is the hyperbolic secant.

Also see

 * Derivative of Hyperbolic Sine
 * Derivative of Hyperbolic Cosine


 * Derivative of Hyperbolic Tangent
 * Derivative of Hyperbolic Cotangent


 * Derivative of Hyperbolic Cosecant