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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
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<TITLE>CSC Trigonometric Cosecant Function
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<H2>CSC Trigonometric Cosecant Function
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<P>
Section: <A HREF=sec_mathfunctions.html> Mathematical Functions </A>
<H3>Usage</H3>
Computes the <code>csc</code> function for its argument. The general
syntax for its use is
<PRE>
y = csc(x)
</PRE>
<P>
where <code>x</code> is an <code>n</code>-dimensional array of numerical type.
Integer types are promoted to the <code>double</code> type prior to
calculation of the <code>csc</code> function. Output <code>y</code> is of the
same size and type as the input <code>x</code>, (unless <code>x</code> is an
integer, in which case <code>y</code> is a <code>double</code> type).
<H3>Function Internals</H3>
Mathematically, the <code>csc</code> function is defined for all arguments
as
<P>
<DIV ALIGN="CENTER">
<IMG SRC="csc_eqn1.png">
</DIV>
<P>
<H3>Example</H3>
The following piece of code plots the real-valued <code>csc(2 pi x)</code>
function over the interval of <code>[-1,1]</code>:
<PRE>
--> t = linspace(-1,1,1000);
--> plot(t,csc(2*pi*t))
--> axis([-1,1,-10,10]);
</PRE>
<P>
<P>
<DIV ALIGN="CENTER">
<IMG SRC="cscplot.png">
</DIV>
<P>
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