第14章竞争市场上的企业分解.ppt

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第14章竞争市场上的企业分解.ppt

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什么是竞争市场完全竞争市场中的企业努力使利润最大化利润总收入减总成本总收益, TR = P ? Q 价格乘以数量与产出量成比例 ? 2015 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part, except for use as permitted in a license distributed with a certain product or service or otherwise on a password-protected website for classroom use. * 什么是竞争市场平均收益, AR = TR / Q 总收益除以销售量边际收益, MR = ?TR / ?Q 增加一单位销售量引起的总收益变动对于竞争企业 AR = P MR = P ? 2015 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part, except for use as permitted in a license distributed with a certain product or service or otherwise on a password-protected website for classroom use. * 表 1 * ? 2015 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part, except for use as permitted in a license distributed with a certain product or service or otherwise on a password-protected website for classroom use. 竞争企业的总收益、平均收益和边际收益利润最大化最大化利润在总收益减去总成本最大处生产边际收益与边际成本的比较若MR MC: 增加产量若MR MC: 减少产量最大化利润，MR = MC ? 2015 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part, except for use as permitted in a license distributed with a certain product or service or otherwise on a password-protected website for classroom use. * 表 2 * ? 2015 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part, except for use as permitted in a license distributed with a certain product or service or otherwise on a password-protected website for classroom use. 利润最大化: 十个数字实例利润最大化边际成本曲线和企业的供给决策 MC曲线是向上倾斜的 ATC曲线是U形的 MC曲线与ATC曲线在ATC曲线最低处相交价格曲线是水平的: P = AR = MR ? 2015 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part, except for use as permitted in a license distributed with a certain product or service or otherwise on a password-protected website for classroom use. * 图 1 * ? 2015 Cengage Learning. All Rights Reserv