rong> – Left x boundary</p></li>
<li><p><strong>x2</strong> – Right x boundary</p></li>
<li><p><strong>y1</strong> – Left y boundary</p></li>
<li><p><strong>y2</strong> – Right y boundary</p></li>
<li><p><strong>N1</strong> – Discretization of x</p></li>
<li><p><strong>N2</strong> – Discretization of y</p></li>
<li><p><strong>mu</strong> – Mean of normal noise added</p></li>
<li><p><strong>sigma</strong> – Variance of normal noise added</p></li>
</ul>
</dd>
<dt class="field-even">Returns<spa