首先我们要了解什么是需求弹性,需求弹性是指市场上的某种商品的需求量在价格变化时变化多少。
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需求弹性函数是一个公式,它反映了需求量随价格变化的情况,能够在数值上具体的反应两者之间的变化关系。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/f3d3572c11dfa9ec9365603b6fd0f703918fc156?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
计算需求弹性系数的方式就是用需求量的变化量除以价格的变化量,得出的值就是需求弹性系数
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需求弹性系数越大的话,则说明需求量随价格的变化越大,就是说需求对价格的变化越敏感。
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同时需求弹性系数的正负则会反应出需求量是随价格变化正向变化还是反向变化。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/279759ee3d6d55fb9755400a60224f4a20a4dd0e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
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在实际运用中需求弹性可以是很多种,可以是需求收入弹性,也可以是需求预期弹性。不同的情况用不同的就可以了。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/503d269759ee3d6d7155b1e74e166d224f4ade0e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)