acosh

Inverse hyperbolic cosine in radians

Usage

acosh(A)

• A should be an array, which can be complex or real.
• It returns an array containing the inverse hyperbolic cosine (in radians) of each element of A.
• For real elements of A lying in $[1,\infty)$​, it returns real values​​. (See example below.)
• For real elements of A smaller than 1, it returns complex numbers.
• The output has the same size as A.

Example

Input

x=linspace(1,100);
y=acosh(x);
plot(x,y,'.-');
xlabel('x')
ylabel('acosh(x) in radians')

Input