Difference between revisions of "Manuals/calci/SECH"

Latest revision as of 14:39, 3 July 2018

SECH(x)

where x is any real number.
- SECH(), returns the inverse hyperbolic secant of a number.

This function gives the hyperbolic Secant of 'x',
It is also called as Circular function.
SECH is the reciprocal of COSH function.
SECH(x)= $(cosh(x))^{-1}$ i.e, ${\frac {2}{e^{x}+e^{-x}}}$ or SEC(iz). where 'i' is the imaginary unit and $i={\sqrt {-1}}$
Also relation between Hyperbolic & Trigonometric function is $Sec(ix)=Sech(x)$ & $Sech(ix)=Sec(x)$
SECH(-x) = SECH(x)

SECH(x)

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 <div style="font-size:30px">'''SECH(x)'''</div><br/>
 * where x is any real number.
+**SECH(), returns the inverse hyperbolic secant of a number.
 ==Description==