點解 MR=MC 既時候 ~ PROFIT 就最高既 ???

有冇人知

點解 MR=MC 既時候 ~ PROFIT 就最高既 ???

我整係知道 MR=MC 既時候 PROFIT係最高 ~ 但我諗極都唔明點解呀

2 個解答

評分
  • 1 十年 前
    最佳解答

    First you have to be clear on the definitions of MR and MC

    MR = dTR/dQ, MC = dTC/dQ

    (ADDITIONAL revenue / costs that the production of one extra unit of output will bring)

    That is because

    if MR > MC,

    then there is still room for profits and production of extra units will continue as long as this condition is met

    if MR < MC, then there is no point to produce that extra quantity of unit as long as this condition is met

    (e.g. if MC curve cuts MR curve from ABOVE at Q=5, then the firm will only start its production from Q=5, which might happen for things like power plants because of the large fixed costs involved)

    For example, suppose when Q=2, MR = 5, MC=3, you produce this unit. When Q=3, MR=5, MC=7, you do not produce this unit because it will result a negative profit.

    Therefore MR=MC is a condition when all opportunities for extra profit are exhausted and the current extra unit of production is already receiving zero profit.

  • 1 十年 前

    MR係邊際的利益

    MC係邊際的成本

    MR 最後會不斷的下趺,而MC最後會不斷升

    當MR = MC 時,其實已經賺盡了

    再要下一個的時候,MR < MC,你會earn少左

還有問題嗎?立即提問即可得到解答。