3 Lagrangean Method concepts you must know


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Lagrangean method is a way of locating local optimum subject to constraints. Suppose we have an objective function f(x,y) and we want to find an optimum of this function subject to the constraint g(x,y) =c. In order to find optimum, form a lagrangean function L(x,y,λ; c) = f(x,y) + λ(c-g(x,y)), where λ is the lagrangean multiplier.

In this series  of videos, we formally derive the first order conditions and second order conditions of lagrangean method. Then, to support our formal proof, we provide some example of how lagrangean method works in practice Continue reading

7 Optimization in Economics videos


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Individuals, firms or Government maximize their utility/profits/social welfare subject to constraints. They maximize utility/welfare/profits or minimize expenditure/costs. Hence optimization plays an important role in economics. We will look at the optimization of single-valued or multi-valued functions. In this series, we will look at the motivation behind first order and second order conditions and then we discuss some simple applications of optimization of multi variate functions in economics

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