Implements the k-order conditional and unconditional welfare in the MATLAB routine `evaluate_planner_objective`
TO DO:
- implement a Fortran routine
k_order_momentto compute the unconditional moment EX^k for a given k and a vector of variables X - amend the
k_order_welfareroutine to return the adequate output variables - amend
evaluate_planner_objective.maccordingly
Edited by Normann Rion