# Documentation/Calc Functions/COSH

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COSH

Matematisk

## Resume:

Returnerer den hyperbolske cosinus af et tal.

COSH(Number)

## Returnerer:

Returnerer den hyperbolske cosinus af et givet tal. Den resulterende værdi er mellem +1 >og ∞, dvs. [+1,∞).

## Argumenter:

Tallet er det reelle tal eller en reference til en celle, der indeholder det tal, hvis hyperbolske cosinus-værdi skal beregnes.

• If Number is non-numeric, then COSH reports a #VÆRDI! error.

## Yderligere oplysninger:

Formlen for den for the hyperbolske cosinus er:

hvor N er tallet

$\displaystyle{ \cosh(x)~=~\frac{e^x+e^{-x}}{2} }$

GIFen herunder illustrerer funktionen COSH:

Funktionen COSH

## Eksempler:

Formel Beskrivelse Returns
=COSH(0) Hyperbolic cosine of 0. 1
=COSH(D1) where cell D1 contains the number -2. Hyperbolic cosine of -2. 3,76219569108363
=ARCCOSH(COSH(3)) The hyperbolic cosine of 3 radians is taken and then the inverse hyperbolic cosine of that value is calculated. Note that =ARCCOSH(COSH(-3)) also returns 3, because COSH is an even function. 3

COSH