title: Combining List<List<double>>
body: <p>I have two <code>List&lt;List&lt;double&gt;&gt;</code> say x and y. I need to create a new <code>List&lt;List&lt;double&gt;&gt; z</code> where each element is <code>Math.sqrt(xElem + yElem)</code> where xElem and yElem are corresponding elements of x and t respectively. Can I do this using a single statement using LinQ in C# ?</p>