pan class="string">expected</span> <span class="string">cost</span>                                             <span class="string">[1 x  1 ]</span>
dLdm  <span class="string">derivative</span> <span class="string">of</span> <span class="string">expected</span> <span class="string">cost</span> <span class="string">wrt.</span> <span class="string">state</span> <span class="string">mean</span> <span class="string">vector</span>        <span class="string">[1 x  D ]</span>
dLds  <span class="string">derivativ