👉 Few questions covered:

1.what is Lagrangian multiplier method ?

2.what is Lagrangian method Operation Research ?

3.what is Hessian Matrix ?

👉 About Lagrangian multiplier method: Lagrangian multiplier method which provides a necessary conditions for an optimum when constraints are equations. This is a particular case of the more general problem with inequality constraints. The development of this method will made initially for a function of two variables. Later we shall generalize the argument for any number of variables. Necessary conditions for an unconstrained optimum of L are also necessary conditions for constrained optimum of f(x,y).The function L defined is called Lagrangian function and lambda is called the Lagrangian multiplier.