How to Calculate Marginal Rate of Substitution using indifference curves

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  • Опубліковано 7 лют 2025

КОМЕНТАРІ • 72

  • @arielk6644
    @arielk6644 7 років тому +5

    Wow..I was having trouble calculating the MRS until I saw this video. This clip explains so easily how the calculation works! Thank you so much :-D

  • @7juan11
    @7juan11 14 років тому +4

    The examples you give and the way you explain it makes it so easy for me to study for my exam in Microeconomics. Thank you!!!!!

  • @rolanmilutinovic
    @rolanmilutinovic 11 років тому +58

    For the calculation A to E, the price(x) of A is 10 instead of 20.

  • @economicsfun
    @economicsfun  11 років тому +6

    Right, but the reason for the second indifference curve is to demonstrate the slope of a line. It is not to suggest that the same consumer has intersecting indifference curves.
    I do have a new version of this same video and an entire playlist on consumer theory that I would encourage to watch. There are links to these in the video description.

    • @kvo1532
      @kvo1532 7 років тому

      Economicsfun thanks

  • @SpankytheTswana
    @SpankytheTswana 9 років тому +16

    Just to enquire, @ ~4:40, shouldn't A to E be 60 - 40 / 10* - 60 (instead of 20 - 60) because point 20 is for B, not A?? (Nice vid nonetheless...

  • @economicsfun
    @economicsfun  12 років тому +4

    The official tag line is "party more study less" I really hope to free up students so they can do what they love (other than study).
    Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.

  • @Roberto-qw4bo
    @Roberto-qw4bo 8 років тому

    So you're awesome! Thanks for the help. my teacher spent around 30 minutes trying to explain this to class but I fully understood you all the way! Thanks a lot! +1

  • @economicsfun
    @economicsfun  11 років тому

    Good question. A and D are really inverse of each other. If you graphed the slope (MRS) at each point from A, B, C, D you would see a step line (positive slope) that gradually flatness out (at some point be zero) then it would turn downward (negative). Makes Sense?

  • @economicsfun
    @economicsfun  11 років тому

    You are very welcome!!!
    Make sure you like MyBookSucks on FaceBook (see link in video description). This will help others find the educational videos.

  • @sararajpoot8329
    @sararajpoot8329 3 роки тому +1

    Greatly Explained
    👌👌

  • @kiran7stephen
    @kiran7stephen 11 років тому +1

    simple and understandable very nice friend.........

  • @nanayip5578
    @nanayip5578 10 років тому +6

    Easy to understand, but from A to E, x is like from 10 to 60

  • @economicsfun
    @economicsfun  11 років тому +1

    Good question and I can see why you are confused.
    Marginal Rate of Substitution is the slope of the indifference curve. Slope is rise (change y) divided by run (change in x). You will see MRSxy = - (dy/dx)
    You may be confusing this Marginal Utility and Marginal Rate of Substitution and is written as MRSxy = MUx / MUy.
    I just added a link to a video (in this video description) where I describe the differences. Don't be intimated by the calculus and I would encourage you to watch it.

  • @nethajisompalli9602
    @nethajisompalli9602 4 роки тому

    Tq for ur explanation, it helped me a lot

  • @ilord112
    @ilord112 4 роки тому +1

    Why the utility of a,b,c are the same??
    Also, is that supposed to be 10-60? When A to E? △ X.

  • @fantom10011
    @fantom10011 12 років тому

    indifference curves are not budget constraints. budget constraints are always tangent to indifference curves. they touch, but it does not mean that the indifference curve is the budget. You may have unattainable indifference curves that may be obtained with an increase of income or decrease in prices. hope that helps.

  • @rowenang6761
    @rowenang6761 5 років тому +1

    This is extremely helpful!! Thank you!!

  • @TheChainsbroken
    @TheChainsbroken 4 роки тому

    excellent video is a shame that my professor don't try to teach me and my classmate
    like this.

  • @economicsportal
    @economicsportal 5 років тому

    Very good

  • @LukeBodieM
    @LukeBodieM 13 років тому

    Yes, I also noted that error regarding A to E - no big deal, he must have overseen it coz it`s a to simple example for him.

  • @economicsfun
    @economicsfun  13 років тому

    @CaMoyBepeH Not sure how to respond because it seems like you missed the first 30 seconds of the video telling you there is a newer version available.

  • @KaloyanDrenski
    @KaloyanDrenski 11 років тому +1

    Very good tutorial. Thank you!

  • @monicamahala3145
    @monicamahala3145 9 років тому +2

    wow!! that was really easy :) thanks

  • @yashesh1510
    @yashesh1510 9 років тому +2

    when you move to flatter curve from point a to e, the distance in the denominator is from 10 to 60 and not from 20 to 60. please check.

    • @economicsfun
      @economicsfun  9 років тому +1

      +Yashesh Parekh Thanks for the catch, I will redo the video and repost.

    • @yashesh1510
      @yashesh1510 9 років тому

      Btw... Can you post a video on one of the concept in which I have a duct doubt.

  • @osaskeys7316
    @osaskeys7316 3 роки тому

    U said indifference curve are concave, are they not convex?

  • @natashajoyy4223
    @natashajoyy4223 2 роки тому

    Why is the utility the same at points a b and c ? How ?

  • @Sipmeister007
    @Sipmeister007 9 років тому +15

    You said concave... it's actually convex to the origin.

    • @joellebeau2999
      @joellebeau2999 9 років тому

      +syprian isaacs i know right?

    • @Sipmeister007
      @Sipmeister007 9 років тому +1

      Lol, he know's better, just a minor slip up!

  • @ayoellis3109
    @ayoellis3109 7 років тому

    How did he come to the conclusion that the consumer values y more than x at 5:06

  • @88MEOWZA
    @88MEOWZA 6 років тому

    thanks that was very well explained !

  • @alexandraduret7727
    @alexandraduret7727 7 років тому +27

    party more study less??? thats what gotten me in this mess in the first place

  • @TheSexy9347
    @TheSexy9347 9 років тому +15

    sorry, but indifference curves cannot cross. other than that, thanks for the videos ;)

    • @noahlove1955
      @noahlove1955 4 роки тому +1

      That’s only for indifference curves of the same function. He was comparing different functions

    • @odutayoademayowa5830
      @odutayoademayowa5830 3 роки тому

      @@noahlove1955 but though the second curve is convex, it isn't to the origin.

  • @TheLifeOfLauren123
    @TheLifeOfLauren123 3 роки тому

    this helped a lot thank you!
    🍉

  • @Fawnzy20
    @Fawnzy20 11 років тому

    This is really helpful! Thank you!

  • @lovelifelovesophie
    @lovelifelovesophie 14 років тому

    thanks .it helps me a lot!!!!

  • @Swagbot3000
    @Swagbot3000 7 років тому

    Why is it the change first point minus the second point. Shouldn't change be the 2nd point minus the first point?

  • @princemartinez8038
    @princemartinez8038 11 років тому

    How does the MRS differ at A and D on the diagram? How can this be shown diagrammatically?

  • @economicsfun
    @economicsfun  12 років тому

    Yes that would be correct.

  • @faithraitano9747
    @faithraitano9747 9 років тому

    WHEN FINDING DIFFERENCE, WE SUBTRACT INITIAL POINT FROM THE FINAL POINT, TO AVOID CONFUSION OH HOW TO AVOID NEGATIVE SIGN. AND ALSO, THE POINT A- E WOULD BE 10 - 60. WHEN FINDING THE DIFFERENCE, 60-10=50.. AVOID NEGATIVE SIGN..

    • @economicsfun
      @economicsfun  9 років тому

      Faith Raitano Good observation and suggestion. Often in economics it is implied the sign is just ignored.

  • @celestinaakuffo-ojegba9474
    @celestinaakuffo-ojegba9474 10 років тому +1

    Is the function concave or convex

    • @Andybwc
      @Andybwc 10 років тому

      They are convex.. he made a mistake :)

  • @sheru.gulati
    @sheru.gulati 12 років тому

    "party more and study less" lool, that`s the last thing I expected to hear!

  • @christopherbarajas5455
    @christopherbarajas5455 3 роки тому

    Why is it that the MRS answer is not negative?

  • @chewbaccawillrule
    @chewbaccawillrule 9 років тому +1

    how do you calculate the MRS if there are no values given

    • @economicsfun
      @economicsfun  9 років тому

      +calysss b Well, I do have some videos on the theory. Here is a link ua-cam.com/play/PL2D7155066C3E2720.html

  • @LukeBodieM
    @LukeBodieM 13 років тому

    @mikemmoon Yes, absolutely - I also woundered a bit first!

  • @maniraguhajeanamourkazungu8161
    @maniraguhajeanamourkazungu8161 3 роки тому

    Wandafull

  • @drallisimo34
    @drallisimo34 9 років тому

    great!!!

  • @Iamahumanehuman
    @Iamahumanehuman 7 років тому

    Indifference curves cannot intersect. If they did then point B would yield the same level of satisfaction as E which isn't true

  • @AbhishekSharma-in7vo
    @AbhishekSharma-in7vo 9 років тому

    Awesome party more study less haha:-)

    • @economicsfun
      @economicsfun  9 років тому

      +Abhishek Sharma Yes, it is a fun tag line. If you think it about it. Most students would rather be doing something else than studying.

  • @piqou445
    @piqou445 12 днів тому

    damn this was made when i was 4...

  • @GiaTzou
    @GiaTzou 5 років тому

    Great info, but the video did not make me feel like partying... more alike as I was being forced to watch Bingo with my grandmother. You have to speed up a bit, maybe give more i.r.l. or concrete examples, otherwise thanks! 💪

  • @mamochabalala
    @mamochabalala 8 років тому +3

    i was taught that indifference curve do not cross

  • @economicsfun
    @economicsfun  14 років тому

    @ilieklolcatz I use a combination of a lot of different software (Flash, Final Cut, Keynote, Soundtrack pro, garage band). It is done on an Apple (computer)

  • @imgamaleldin
    @imgamaleldin 9 років тому

    It is convex to the origin not concave. He made a mistake.

  • @Mentuso
    @Mentuso 11 років тому

    iNDIFFERENCE CURVE ARE CONVEX...

  • @Economics365
    @Economics365 Рік тому

    X has to remain same unit of change