LT'</span>, true) ;
      opU = struct (<span class="string">'UT'</span>, true) ;
      x = linsolve (U, linsolve (L, b(p,:), opL), opU) ;
      y = linsolve (U, linsolve (L, c(p,:), opL), opU) ; toc
</pre><pre class="codeoutput">LUtime =
    0.3043
Elapsed time is 0.014511 seconds.
Elapsed time is 0.006586 seconds.
</pre><h2>INV is easy to use, but slow and inaccurate<a name="9"></a></h2>
         <p>Oh bother!  Using LU and LINSOLVE is too complicated.  You just want to solve your system.  Let's just comp