生產(chǎn)者理論知識(ppt55頁)(已修改)
2025-02-24 18:19 本頁面
【正文】 The Firm: Comparative Statics MicroEconomics Production Optimisation The Firm and the Market Comparative Statics The Market The Firm Overview... ?...we derive the firm39。s reactions to changes in its environment. ?These are the response functions. ?We will examine three types of them, treating the firm as a... ?...Black Box the firm Moving on from the optimum... the firm output level。 input demands market prices How it works... ?Use the fact that the firm is an optimiser ?Behaviour can be predicted by necessary and sufficient conditions for optimum ?The FOC can be solved to yield behavioural response functions. ?Their properties derive from the solution function The firm as a “black box” The Firm Production Output Supply Ordinary Input Demand Optimisation Comparative Statics The Firm and the Market Conditional Input Demand dinary Input black box problems Choose z to minimise S wi zi m i=1 Q ? G(z) ...subject to the production constraint... z ? 0 ...and the obvious nonnegativity conditions The solution to the firststage problem ... C(w, Q) := min ? wi zi vector of input prices Specified output level and, presumably... Yields minimised cost as a function of exogenous variables... one for each of the m inputs z1* = H1(w,Q) z2* = H2(w,Q) ... ... ... ... zm* = Hm(w,Q) ? ? ? ...optimal input demands as a function of exogenous variables demand for input i, conditional on output Q We need to examine the first stage of the optimisation process zi* = Hi(w,Q) A function of input prices ...and output level conditional input demand function (our first response function)
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