><FONT SIZE=5><B>lsqinv</B></FONT>


<FONT SIZE=4><SPAN LANG="en-US">Calculates the inverse of the matrix A^T A, where A is the coefficient matrix of a linear least squares problem.  <I>lsqinv</I><SPAN STYLE="font-style: normal">  can be used for the calculation of the covariance matrix of a linear least squares problem,</SPAN></SPAN></FONT>
<FONT SIZE=4><SPAN LANG="en-US">for details see book of Hang T. Lau, “A Java Numerical Library for Scientists and engineers|”, Chapman &amp; Hall, 2004</SPAN></FONT