CosH (hyperbolic cosinus)
  

Returns hyperbolic cosine of given value.

Formula of the function:
CosH(n) = (e^n + e^(-n))/2
where "e" (Euler's number) ~ 2,71828182845904

syntax
CosH(number)

input
real number

returns
real number

example
CosH(2) = 3,76219569108363146