n matrix of a system of N first order ODEs of N variables. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in]</td><td class="paramname">x</td><td>The value of the independent variable at which the Jacobian is to be evaluated. </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">y</td><td>An N-element array containing the values of the dependent variables at <code>x</code>. </td></tr>
    <tr><td class="paramdir">[out]</td><td class="p