<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Gradient - Page 17 - Wikipedia">
<p>
<a accesskey="1" href="page.php?w=Gradient&amp;p=16">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Gradient&amp;p=18">3.Next</a>
</p>

<p>In <a href="page.php?w=spherical_coordinate_system">spherical coordinates</a> with a Euclidean metric, the gradient is given by:</p>

<p>where  is the radial distance,  is the azimuthal angle and  is the polar angle, and ,  and  are again local unit vectors pointing in the coordinate directions (that is, the normalized <a href="page.php?w=Curvilinear_coordinates">covariant basis</a>).</p>

<p>For the gradient in other <a href="page.php?w=orthogonal_coordinate_system">orthogonal coordinate system</a>s, see <a href="page.php?w=Orthogonal_coordinates">Orthogonal coordinates (Differential operators in three dimensions)</a>.</p><p>
<a accesskey="1" href="page.php?w=Gradient&amp;p=16">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Gradient&amp;p=18">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
