A.3 Marginal rate of substitution | Consumption - Microeconomics

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  • เผยแพร่เมื่อ 12 ธ.ค. 2024

ความคิดเห็น • 23

  • @greensimon8625
    @greensimon8625 8 ปีที่แล้ว +61

    This video is awesome but at the beginning explanation, MRS(x,y)=(MU_x)/(MU_y) should be how many unit of good "y" is the agent willing to give up for an extra unit of good "x" instead.

  • @Policonomics
    @Policonomics  10 ปีที่แล้ว +10

    This video explains how to calculate and use the marginal rate of substitution (MRS). We start by learning how to calculate it, then move on to use it in order to properly draw indifference curves and, finally, we analyse the MRS for different kinds of indifference curves.
    A.3 Marginal rate of substitution | Consumption - Microeconomics
    Learn, and enjoy!

  • @94tompa
    @94tompa 8 ปีที่แล้ว +16

    Dear Policonomics,
    why is the formula for the MRS = 2x/2y (or x/y in the second example)? shouldn't it be the other way around? 2y/2x =(u'(y)/u'(x))?

    • @wrjazziel
      @wrjazziel 4 ปีที่แล้ว +3

      I'm alswo waiting for an answer on that :)

    • @gphilipsen95
      @gphilipsen95 3 ปีที่แล้ว +3

      Because in order to get the MRS you need to calculate the marginal utility (MU), the partial derivative, for x and y. In the first example the utility function is given by y^2+x^2. This results in the following partial derivatives: dU/dy (or y')= 2y^2-1=2y and dU/dx (or x')=2x^2-1 = 2x. In the second example the utility function is given by y * x, resulting in a different differentiation due to the multiplication. The dU/dy (or y')= x * y^1-1 = x and dU/dx ( or x') = x^1-1 * y = y . The difference in the first and second example is mainly caused by the nature of the utility functions. Example one uses y + x and example two uses y*x, this makes a big difference when calculating the partial derivatives.

  • @glenipolus9731
    @glenipolus9731 ปีที่แล้ว +5

    omg in 5 minutes you explained something my teacher couldn't explain in 3 hours

    • @ozycoo
      @ozycoo หลายเดือนก่อน

      +

  • @justchannel2135
    @justchannel2135 4 ปีที่แล้ว +2

    Superfine and clean presentation. I totally Loved it.

  • @48_subhambanerjee22
    @48_subhambanerjee22 2 ปีที่แล้ว +1

    Much love from India.. understood

  • @serinacat4781
    @serinacat4781 7 ปีที่แล้ว +4

    thank you. the video has everything I need to know

  • @YOSRfakhfakh
    @YOSRfakhfakh 2 ปีที่แล้ว

    I love how precise the interpretation was

  • @wrjazziel
    @wrjazziel 4 ปีที่แล้ว +5

    Good video... 2nd problem: can anyone explain to me why she flipped x and y on the MRS formula, after derivation she got Ux=Y and Uy=x but in the formula she flipped it MRS= Y/X .... please anyone! thanks in advance

  • @tylercompton9761
    @tylercompton9761 3 ปีที่แล้ว +2

    This video was great! Thank you so much that makes so much sense now!

  • @osamahbooshi1600
    @osamahbooshi1600 2 ปีที่แล้ว +1

    Its important for you to explain why math is not math in economics. What i mean is when you take the derivative of X and Y they dont just end up As X and Y as the derivative should be 1 and 1. If iam not mistaken.

    • @DavidRotin
      @DavidRotin ปีที่แล้ว

      They are doing partial derivative. So when deriving the utility function you make one of the variable a constant.

  • @felony077
    @felony077 10 ปีที่แล้ว +8

    AMAZING !! THANK YOU SO MUCH !!!!!!!

  • @musaa.olarray6456
    @musaa.olarray6456 3 ปีที่แล้ว

    Wow , I most admit that you clear some challenges for me here but how can I go about solving problems like this U=√XY to find the marginal rate of substitution

  • @dibissaejeta4447
    @dibissaejeta4447 2 ปีที่แล้ว

    Given utility function u(x1,x2)=max(@x1,Bx2),
    find mariginal rate of substitution

  • @mogesk.m5445
    @mogesk.m5445 ปีที่แล้ว

    Thanks amillion.

  • @christinemambo1319
    @christinemambo1319 2 ปีที่แล้ว

    Thanks so much

  • @Colonelboereieney
    @Colonelboereieney 5 ปีที่แล้ว

    Great vid ba

  • @chintubagarty2236
    @chintubagarty2236 3 ปีที่แล้ว +3

    Your language is very hard ma'am