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down refers to a shortrun decision not to produce anything during a specific period of time because of current market conditions. ?Exit refers to a longrun decision to leave the market. Harcourt, Inc. items and derived items copyright 169。 2021 by Harcourt, Inc. 企業(yè)的短期停止?fàn)I業(yè)決策 ?停止?fàn)I業(yè) 是指在某個(gè)特殊時(shí)期由于當(dāng)前的市場(chǎng)條件而不生產(chǎn)任何東西的短期決策。 ?退出 是指離開市場(chǎng)的長(zhǎng)期決策。 Harcourt, Inc. items and derived items copyright 169。 2021 by Harcourt, Inc. The Firm’s ShortRun Decision to Shut Down The firm considers its sunk costs when deciding to exit, but ignores them when deciding whether to shut down. ?Sunk costs are costs that have already been mitted and cannot be recovered. Harcourt, Inc. items and derived items copyright 169。 2021 by Harcourt, Inc. 企業(yè)的短期停止?fàn)I業(yè)決策 當(dāng)決定退出時(shí),企業(yè)考慮 沉淀成本; 當(dāng)決定是否停止?fàn)I業(yè)時(shí)企業(yè)應(yīng)忽略沉淀成本。 ?沉淀成本 是已經(jīng)發(fā)生而且無法收回(并與當(dāng)前決策無關(guān)) 的成本。 Harcourt, Inc. items and derived items copyright 169。 2021 by Harcourt, Inc. The Firm’s ShortRun Decision to Shut Down ?The firm shuts down if the revenue it gets from producing is less than the variable cost of production. Shut down if TR VC Shut down if P AVC Harcourt, Inc. items and derived items copyright 169。 2021 by Harcourt, Inc. 企業(yè)的短期停止?fàn)I業(yè)決策 ?如果生產(chǎn)能得到的收益小于生產(chǎn)的可變成本,企業(yè)就停止?fàn)I業(yè)。 如果 TR VC, 停止?fàn)I業(yè)。 如果 P AVC, 停止?fàn)I業(yè)。 Figure 3 The Competitive Firm’s Short Run Supply Curve MC Quantity ATC AVC 0 Costs Firm shuts down if P AVC Firm ’ s shortrun supply curve If P AVC, firm will continue to produce in the short run. If P ATC, the firm will continue to produce at a profit. Harcourt, Inc. items and derived items copyright 169。 2021 by Harcourt, Inc. The Firm’s LongRun Decision to Exit or Enter a Market ?In the longrun, the firm exits if the revenue it would get from producing is less than its total cost. Exit if TR TC Exit if P ATC Harcourt, Inc. items and derived items copyright 169。 2021 by Harcourt, Inc. 企業(yè)進(jìn)入或退出一個(gè)市場(chǎng)的長(zhǎng)期決策 ?在長(zhǎng)期中,如果從生產(chǎn)中得到的收益小于生產(chǎn)的總成本 ,企業(yè)就退出。 如果 TR TC, 就退出。 如果 P ATC, 就退出。 Harcour