| FreeMat
    | 
Section: Mathematical Functions
Computes the inverse hyperbolic sine of its argument. The general syntax for its use is
y = asinh(x)
 where x is an n-dimensional array of numerical type. 
The asinh function is computed from the formula 
![\[ \sinh^{-1}(x) = \log\left(x + (x^2 + 1)^0.5\right) \]](form_52.png) 
 where the log (and square root) is taken in its most general sense. 
Here is a simple plot of the inverse hyperbolic sine function
--> x = -5:.01:5;
--> plot(x,asinh(x)); grid('on');
