output of COX(x,pk), i.e., its first row</span>
0004 <span class="comment">% contains the function values at x. This function fills out the second row</span>
0005 <span class="comment">% with the first derivative. The 2nd to pth derivatives are not yet</span>
0006 <span class="comment">% implemented.</span>
0007 <span class="comment">% N: (p+1)x(p+1) matrix, return value of COX(x,p,k).</span>
0008 <span class="comment">% knotSpan: knot span of the abscissae, return value of COX(x,p,k)</span>
0009 <span clas