https://au.mathworks.com/help/finance/ecmnhess.html
ecmnhess - Hessian of negative log-likelihood function - MATLAB
This MATLAB function computes an NUMPARAMS-by-NUMPARAMS Hessian matrix of the observed negative log-likelihood function based on current parameter estimates.
hessiannegativeloglikelihoodfunction
https://es.mathworks.com/help/finance/ecmnhess.html
ecmnhess - Hessian of negative log-likelihood function - MATLAB
This MATLAB function computes an NUMPARAMS-by-NUMPARAMS Hessian matrix of the observed negative log-likelihood function based on current parameter estimates.
hessiannegativeloglikelihoodfunction