<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"><!-- P {margin-top:0;margin-bottom:0;} --></style>
</head>
<body dir="ltr">
<div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif;" dir="ltr">
<p>Dear Paul,</p>
<p><br>
</p>
<p>Thank you for your detailed answer. I understand now what needs to be done. </p>
<p><br>
</p>
<p>Also, you mentioned that you had a code that could help me solve the B u = b problem exactly. If it is not too much trouble, I would really appreciate it if you shared it with me. It would save me a lot of time.</p>
<p><br>
</p>
<p>Thank you,</p>
<p><br>
</p>
<div id="Signature">
<div name="divtagdefaultwrapper" style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:; margin:0">
Juan Diego</div>
</div>
</div>
</body>
</html>