Seonglae ChoLagrangian
f(x) is Objective function , g(x)는 Optimization Constraint. λ는 Lagrange multiplier and general version is
and then take derivative to this function by
We need Lagrange Function for each Optimization Constraint
We might derivate Lagrange function and find w which minimize
Check this is not max and min. not argmax
Lagrange function Notion