COSH Hyperbolic Cosine Function

Section: Mathematical Functions

Usage

Computes the hyperbolic cosine of the argument. The syntax for its use is 
   y = cosh(x)

Function Internals

The cosh function is computed from the formula

For x complex, it follows that

Examples

Here is a simple plot of the hyperbolic cosine function 
--> x = linspace(-5,5);
--> plot(x,cosh(x)); grid('on');