Derivative of Hyperbolic Tangent

Theorem

 * $\map {\dfrac \d {\d x} } {\tanh x} = \sech^2 x$

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 Cotangent


 * Derivative of Hyperbolic Secant
 * Derivative of Hyperbolic Cosecant