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Section: Mathematical Functions
Computes the sin function for its argument. The general syntax for its use is 
y = sin(x)
 where x is an n-dimensional array of numerical type. Integer types are promoted to the double type prior to calculation of the sin function. Output y is of the same size and type as the input x, (unless x is an integer, in which case y is a double type). 
Mathematically, the sin function is defined for all real valued arguments x by the infinite summation 
![\[ \sin x \equiv \sum_{n=1}^{\infty} \frac{(-1)^{n-1} x^{2n-1}}{(2n-1)!}. \]](form_80.png) 
 For complex valued arguments z, the sine is computed via 
![\[ \sin z \equiv \sin \Re z \cosh \Im z - i \cos \Re z \sinh \Im z. \]](form_81.png) 
The following piece of code plots the real-valued sin(2 pi x) function over one period of [0,1]:
--> x = linspace(0,1); --> plot(x,sin(2*pi*x))
