Definition:Real Hyperbolic Secant/Definition 2

Definition
The real hyperbolic secant function is defined on the real numbers as:


 * $\sech: \R \to \R$:


 * $\forall x \in \R: \sech x := \dfrac 1 {\cosh x}$

where $\cosh$ is the real hyperbolic cosine.

Also see

 * Equivalence of Definitions of Real Hyperbolic Secant


 * Definition:Real Hyperbolic Sine
 * Definition:Real Hyperbolic Cosine
 * Definition:Real Hyperbolic Tangent
 * Definition:Real Hyperbolic Cotangent
 * Definition:Real Hyperbolic Cosecant