66                dd(i + 1, k) = dd(i + 1, k) &amp;
<a name="l00267"></a>00267                     - sqrt_tbl(i+1) * sqrt_tbl(j-k) * dlj * sinhb
<a name="l00268"></a>00268                dd(i, k + 1) = dd(i, k + 1) &amp;
<a name="l00269"></a>00269                     + sqrt_tbl(j-i) * sqrt_tbl(k+1) * dlj * sinhb
<a name="l00270"></a>00270                dd(i + 1, k + 1) = dd(i + 1, k + 1) &amp;
<a name="l00271"></a>00271                     + sqrt_tbl(i+1) * sqrt_tbl(k+1) * dlj * coshb
<a name="l00272"></a>