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<a accesskey="3" href="page.php?w=rectangular_function&amp;p=2">3.Next</a>
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<p><a href="page.php?w=Image%3ARectangular_function.svg">300px</a>The <b>rectangular function</b> (also known as the <b>rectangle function</b>, <b>rect function</b>, <b>Pi function</b>, <b>Heaviside Pi function</b>, <b>gate function</b>, <b>unit pulse</b>, or the <b>normalized <a href="page.php?w=boxcar_function">boxcar function</a></b>) is defined as</p>

<p>Alternative definitions of the function define  to be 0, 1, or undefined. The area under the curve does not change for the different definitions of the functions at .</p>

<p>The rectangular</p><p>
<a accesskey="3" href="page.php?w=rectangular_function&amp;p=2">3.Next</a>
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