refer to the same underlying data, so any changes made to the
data via x will be visible in this vector.  (Note: T_numtype is a publicly
declared typedef for the template parameter).<br></li>

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<b>Vector(Vector&lt;T_numtype&gt;& x, <a href="range.html">Range</a> r)</b><br><br>
Creates a reference (or alias) to a portion of the data of vector x.  
The range object specifies an interval of the index set.  For example,
<pre>
Vector&lt;double&gt; x(50);                // Create a vector of length 50
Vec