Fatal error: Uncaught Error: Class 'Matrix' not found in C:\Apache24\htdocs\PortalUIS_bkp\excel\Spreadsheet\Excel\Classes\PHPExcel\Shared\JAMA\examples\polyfit.php:46
Stack trace:
#0 {main}
thrown in C:\Apache24\htdocs\PortalUIS_bkp\excel\Spreadsheet\Excel\Classes\PHPExcel\Shared\JAMA\examples\polyfit.php on line 46