Jacobian of exponential chi2 function -- August 28, 2014 - 14:16

Hi Edward.

Could you maybe implement the Jacobian from the chi2 exponential function,
and return as list of lists?

Covar could either be equal

Qxx = ( J^T W J) - 1
or
Qxx = ( Jchi2^T Jchi2)-1
Maybe some scaling on the last

Best
Troels