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第436章 供给与需求曲线(第1页)

章节目录保存书签

供给与需求曲线是经济学的基础工具,用于描述市场中商品的供给、需求及其价格和数量的关系。以下是对供给与需求曲线的详细解释:1需求曲线(deandcurve)11定义需求曲线表示在其他条件不变的情况下,消费者在不同价格水平下愿意购买的商品数量。?斜率:需求曲线通常向右下方倾斜,表示价格与需求量呈反比关系(即价格越低,需求越大)。12影响因素?价格:商品价格越低,消费者购买量越大(价格效应)。?消费者收入:收入增加可能导致需求增加(对正常商品)或减少(对劣等商品)。?替代品与互补品:?替代品价格上升,商品需求增加(如咖啡与茶)。?互补品价格上升,商品需求减少(如打印机与墨盒)。?偏好和流行趋势:偏好变化会改变需求(如环保意识提高对新能源车需求的推动)。?预期:消费者预期价格会上涨可能提前增加购买量。2供给曲线(supplycurve)21定义供给曲线表示在其他条件不变的情况下,生产者在不同价格水平下愿意提供的商品数量。?斜率:供给曲线通常向右上方倾斜,表示价格与供给量呈正比关系(即价格越高,生产者愿意供给的数量越多)。22影响因素?价格:价格越高,企业生产利润越大,从而增加供给。?生产成本:生产成本增加(如原材料涨价)会减少供给量。?技术进步:技术创新能降低成本,提高供给能力。?政府政策:?税收增加会减少供给(如碳税)。?补贴会增加供给(如农业补贴)。?市场预期:企业预期价格下跌可能提前增加供给。?自然条件:如农业生产受天气影响。3市场均衡31均衡点?定义:供给曲线和需求曲线的交点为市场均衡点,表示市场中价格与数量达到平衡状态。?均衡价格:在该价格下,供给量等于需求量。?均衡数量:在该数量下,市场没有过剩或短缺。32市场失衡?价格高于均衡价格(供过于求):商品过剩,企业需降价促销。?价格低于均衡价格(供不应求):商品短缺,价格上升吸引更多供给。4供给与需求的变化对均衡的影响41需求变化?需求增加:需求曲线向右移动,均衡价格和数量同时上升(如收入提高)。?需求减少:需求曲线向左移动,均衡价格和数量同时下降(如替代品价格下降)。42供给变化?供给增加:供给曲线向右移动,均衡价格下降,均衡数量上升(如技术进步)。?供给减少:供给曲线向左移动,均衡价格上升,均衡数量下降(如原材料成本增加)。43同时变化?如果供给和需求同时变化,结果取决于变化的相对大小:?需求增加大于供给增加:价格和数量上升。?供给增加大于需求增加:价格下降,数量上升。5图示需求曲线图?横轴表示数量,纵轴表示价格。?向右下倾斜,表示价格越低,需求越高。供给曲线图?横轴表示数量,纵轴表示价格。?向右上倾斜,表示价格越高,供给越大。市场均衡图?供给曲线和需求曲线交点为均衡点,分别表示均衡价格和均衡数量。6实际应用61政府干预?价格上限(如房租管制):限制价格高于某水平,可能导致短缺。?价格下限(如最低工资):限制价格低于某水平,可能导致过剩(如失业)。62经济政策?通过调整税收、补贴或利率影响供给和需求(如刺激消费或投资)。63预测市场变化?根据供给和需求曲线的移动预测市场反应,如对新政策的评估。7总结供给与需求曲线是分析市场机制的核心工具,它不仅揭示价格与数量的互动规律,还能用于解释市场失衡和经济政策的效果。通过理解这些曲线,可以更清晰地把握市场运作原理及其对资源配置的影响。:()职场小聪明

章节目录

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