为什么利润最大化原则MR=MC

发布网友发布时间：2022-04-21 15:19

共2个回答

热心网友时间：2022-07-02 01:29

利润最大化原则：MR=MC,即边际利润=边际成本
1.当MR＞MC，此时表明厂商每多生产一个单位产品所得收益大于所费成本，厂商还有潜在利润可得，不是利润的最大化。
2.当MR＜MC，此时表明厂商每多生产一个单位所得收益小于所费成本，存在亏损，不是利润的最大化。
3.MR=MC，此时表明厂商吧该得到利润都得到了，实现了利润的最大化。

为什么利润最大化原则是MR=MC?

Total Profit (TP) = Total Revenue (TR) - Total Cost (TC)
If a company wants to maximize it's total profit, it means to find the maxima of the above TP function of Q (Quantity), which is dTP/dQ = 0
dTP/dQ = dTR/dQ - dTC/dQ and dTP/dQ = 0
0 = dTR/dQ - dTC/dQ
dTR/dQ = dTC/dQ (where dTR/dQ = MR and dTC/dQ = MC)
MR = MC

在完全竞争市场条件下可表达为P等于MC?

P = Price and Q = Quantity
TR(Q) = P(Q)*Q
TR'(Q) = MR = P'(Q)*Q + P(Q)
For profit maximization under perfect competition
MR = MC
P'(Q)*Q + P(Q) = MC
Under perfect competition, the market price is a constant (P(Q) = P), which is beyond the control of the firm, so P'(Q) = 0
0*Q + P = MC
P = MC
With Quantity, Q = optimum proction volume S, P = MC = TC'(S) and this curve is the supply curve under perfect competition

热心网友时间：2022-07-02 02:47

在垄断竞争下,MR=MC的时候利润最大化,MR曲线是向下倾斜的,MC向上倾斜,交点就是利润最大化的产出点,垄断竞争下产量决定价格.在完全竞争下,MR=MC=AR=P,MR=AR=P曲线是水平的,MC向上倾斜,交点就是利润最大化,完全竞争下价格决定产量
P为均衡时价格