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Section: Mathematical Functions
Computes the inverse cosecant of its argument. The general syntax for its use is
y = acsc(x)
 where x is an n-dimensional array of numerical type. 
The acosh function is computed from the formula 
![\[ \csc^{-1}(x) = \sin^{-1}\left(\frac{1}{x}\right) \]](form_44.png) 
Here is a simple plot of the inverse cosecant function
--> x1 = -10:.01:-1.01;
--> x2 = 1.01:.01:10;
--> plot(x1,acsc(x1),x2,acsc(x2)); grid('on');
