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Section: Mathematical Functions
Computes the hyperbolic tangent of the argument. The syntax for its use is
y = tanh(x)
The tanh function is computed from the formula 
![\[ \tanh(x) = \frac{\sinh(x)}{\cosh(x)} \]](form_86.png) 
Here is a simple plot of the hyperbolic tangent function
--> x = linspace(-5,5);
--> plot(x,tanh(x)); grid('on');
