an class="r-out co"><span class="r-pr">#&gt;</span> &lt;environment: namespace:numDeriv&gt;</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Slot ".options":</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $method</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "Richardson"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </sp