Indifference curves and marginal rate of substitution | Microeconomics | Khan Academy

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  • Опубліковано 26 лис 2024

КОМЕНТАРІ • 135

  • @fazsav
    @fazsav 4 роки тому +335

    I cannot wait to be rich and donate money to this channel !!!

    • @bunchberry_
      @bunchberry_ 3 роки тому +17

      Imaginary economics isn't going to make you rich lol.

    • @landcruiserfan4206
      @landcruiserfan4206 3 роки тому +14

      @@bunchberry_ so true. The concept of 'utility' is completely rubbish. Ideology has infected economics unfortunately...

    • @Yore297
      @Yore297 2 роки тому

      @@landcruiserfan4206 I’m currently learning this right now - I had a feeling it was useless. What aspects of economics are worthwhile? Macro economics?

    • @nightking9435
      @nightking9435 Рік тому +1

      The only thing you'll be rich of are tears because you realized that life ain't handing out free money

    • @nathanwilliams2187
      @nathanwilliams2187 Рік тому

      💀

  • @poetentate
    @poetentate 3 роки тому +64

    I’m taking this for a Master’s degree and this video is better than anything I’ve received in three weeks.

  • @McHughism
    @McHughism 10 років тому +237

    This guy deserves a medal

    • @mamtapandey9504
      @mamtapandey9504 4 роки тому +14

      How's it possible that the video is one year old and your comment is 6...

    • @rishabh5750
      @rishabh5750 4 роки тому +12

      @@mamtapandey9504 Video is over 6 years old. Khan academy just changes the title to make the date more recent. So more people can find it

    • @Amit-lv5po
      @Amit-lv5po 3 роки тому

      Waiting for you dear🤣

    • @McHughism
      @McHughism 3 роки тому +9

      It's been 7 years, can't remember what an indifference curve is 😂 can't say I've ever used it

    • @borisbryant.007
      @borisbryant.007 2 роки тому

      What did Khan study at college?

  • @anushkagupta6383
    @anushkagupta6383 4 роки тому +144

    A big thank to you SAL! What my teacher couldn't teach in 2 hrs, u taught us in 10 minutes:)

    • @brd8764
      @brd8764 3 роки тому

      It is different.

    • @mathiashnsen183
      @mathiashnsen183 2 роки тому

      Are you sure that Sal didn´t prime your learning and Khan, when explaining in a slightly different way made you understand?

  • @lashau7056
    @lashau7056 2 роки тому +31

    These videos are much better than anything I have been taught at University.

  • @kelvinhechangze3016
    @kelvinhechangze3016 5 років тому +28

    Crystal clear. Thank you Sal. I do not know how much knowledge you have in your mind.
    What microphone are you using?

  • @izabellegs8675
    @izabellegs8675 3 роки тому +7

    this channel is what keeps me from dropping my econ minor!!! watched this before class and understood everything!!! thanks!!!

  • @sachingiri8610
    @sachingiri8610 Рік тому +2

    How is it that this guy possesses knowledge in every field?

  • @akash4458
    @akash4458 3 роки тому +5

    Thanks Google for Making UA-cam
    and Thanks Ambani for cheaper rate of Internet in India
    and Thanks Khan Academy

  • @KlyzmTheFirst
    @KlyzmTheFirst 5 років тому +83

    comments from 6 years ago but video was “uploaded” today

    • @tazmeenzargar
      @tazmeenzargar 5 років тому +9

      Aliens have taken control over time travel!

    • @zainabshahid6254
      @zainabshahid6254 5 років тому +6

      UA-cam is high again

    • @last_king5610
      @last_king5610 4 роки тому +2

      *SYNTAX ERROR*

    • @springdayisnottoday371
      @springdayisnottoday371 4 роки тому

      why is that? what happened??

    • @rishabh5750
      @rishabh5750 4 роки тому +2

      @@springdayisnottoday371 Video is over 6 years old. Khan academy just changes the title to make the date more recent. So more people can find it

  • @mrbrunes2040
    @mrbrunes2040 5 років тому +3

    Khan. You sir. Are a Legend. Seriously

  • @cfogle1000
    @cfogle1000 9 місяців тому +1

    You’re a life savor. Thank you 😊

  • @benv5115
    @benv5115 Рік тому +1

    Sal is top 5 human being on earth and it's not even a discussion

  • @hermelaamare5715
    @hermelaamare5715 Рік тому +1

    preferences are represented by the utility function U( represented by the utility function A. U(F,C)= 0.20F 2 C 2 s F, C With food on the horizontal axis and clothing on the vertical axis, identify on a graph the set of point s that give Abel the same level of utility as the bundle (10, 5). Do the same for Eden on a separate graph. B. C. On the same two graphs, identify the set of bundles that give Abel and Eden the same level of utility as the bundle (15, 8). Do you think Abel and E den have the same preferences or different preferences? Explain.....can u show me how to do such kind of questions??

  • @syntheticfiber7388
    @syntheticfiber7388 3 роки тому +3

    Thanks! I've been referring to your videos for my engineering economics course. I've found them very useful.

    • @brd8764
      @brd8764 3 роки тому

      To note as difference and it is just graphical to realise...

  • @teeksha4004
    @teeksha4004 8 місяців тому

    awesome crystal clear vid! thankss

  • @amogelangmakete3635
    @amogelangmakete3635 2 роки тому

    Yoh the best Summary ever u the Best 🥺

  • @arjavjain5671
    @arjavjain5671 11 місяців тому

    wish my mathematics fundamentals were this solid

  • @redz19761
    @redz19761 11 років тому +4

    YOU ARE A GIFT....!!!

  • @sugaudacity
    @sugaudacity 2 роки тому

    the slope of the tangent line at a point on the indifference curve = marginal rate of substitution

  • @somebodyunkownuser5946
    @somebodyunkownuser5946 2 роки тому

    Thank you khan academy you are the best

  • @IvanEugenioCamachoNavarro
    @IvanEugenioCamachoNavarro 9 місяців тому

    great and simple explanation! Thanks.

  • @gangaagarwalla5010
    @gangaagarwalla5010 4 роки тому

    The man teaching is too good at his teaching.. Plz. Keep it up 👍👍👍

  • @pulse5863
    @pulse5863 2 роки тому +2

    Why sal hasn't won an nobel yet

  • @Alexlinnk
    @Alexlinnk Рік тому

    Tha'ts so well explained .Thank ynou

  • @marynight7851
    @marynight7851 2 роки тому

    ... this is really good...

  • @numaniqbal2261
    @numaniqbal2261 2 роки тому

    Thankyou

  • @UshanthJayakumar-hu3xd
    @UshanthJayakumar-hu3xd Рік тому +1

    What is the difference between Marginal Rate of substitution and Marginal opportunity cost?

  • @minusforty4323
    @minusforty4323 2 роки тому

    You're the man

  • @hibaassi9461
    @hibaassi9461 3 роки тому +2

    Thank you for your effort and clear explanation.

  • @sourcloud_
    @sourcloud_ 3 роки тому

    thank u THAnk U

  • @off-side7822
    @off-side7822 2 роки тому

    Very helpful

  • @kaelalazaro7478
    @kaelalazaro7478 5 років тому +26

    so Ted Mosby's really teaching Econ huh

  • @nantokairuman
    @nantokairuman 3 роки тому +17

    Hello. I've been using your 'Microeconomics and Macroeconomics' playlist and found this video missing from it, after watching the Budget Line video. Would you add it to the playlist, please?

    • @nvm928
      @nvm928 Рік тому

      what is the link to the budget line video ?

  • @saifabumghaiseeb1268
    @saifabumghaiseeb1268 3 роки тому

    you're amazing sirrrrrr

  • @AbhishekSahaShuvro
    @AbhishekSahaShuvro 5 місяців тому

    Great❤

  • @joaquin734
    @joaquin734 3 роки тому

    Great Video! Thank you

  • @anysingh567
    @anysingh567 14 днів тому

    While studying at Khan Academy:-
    Indifference.... indifference.... indifference.... I'm built different 😂😂😂😂😂😂

  • @gregolevi
    @gregolevi Рік тому

    Great stuff

  • @JimyFlips
    @JimyFlips 10 місяців тому

    thanks!!

  • @LkMusicFromFrance
    @LkMusicFromFrance 7 років тому +3

    this is awesome, thanks a lot for the help!!!!

  • @zany9009
    @zany9009 2 роки тому

    this was absolutely amazing

  • @ronycamacho7132
    @ronycamacho7132 3 роки тому

    Could you please show on the graph, where is the middle point?

  • @alaaidris7066
    @alaaidris7066 4 роки тому +1

    Thank you!

  • @rauzahossain8023
    @rauzahossain8023 4 роки тому

    Love from Bangladesh

  • @waseemumrani
    @waseemumrani 2 роки тому

    Great

  • @mindpowermath
    @mindpowermath 4 роки тому +1

    Thank you good lecture.. keep up the good work

  • @drallisimo34
    @drallisimo34 8 років тому +2

    great lesson!!!

  • @remixowlz
    @remixowlz 3 роки тому

    Fantastic explanation.

  • @Masteridea101
    @Masteridea101 5 років тому +6

    Can you pls explain, Why should I consider the Indifference as a curve? Why cant i consider that as a straight line? Since the whole concept is assumed, why did not the maker of the curve, consider a straight line? What has made him to consider a curve?

    • @boonsuen1997
      @boonsuen1997 5 років тому +4

      Because we are relying on the concept of strict convexity, which is a more accurate representation of real-life when compared to the liner line

    • @Masteridea101
      @Masteridea101 5 років тому +1

      @@boonsuen1997 Thanks for your reply. So, do you mean that, all real life representations are curved? To be simple, why some graphs are curved and why some are lines in economics? What makes the difference between any curve and any line?

    • @boonsuen1997
      @boonsuen1997 5 років тому +4

      @@Masteridea101, For the most part, yes. It's a curve because your opportunity cost for one good to another will differ at different quantity, etc...

    • @Masteridea101
      @Masteridea101 5 років тому

      @@boonsuen1997 thanks a lot. Still I'm not clear. But anyway thanks a lot for your efforts to make me understand.

    • @booklover-hu9tw
      @booklover-hu9tw 4 роки тому +16

      let me try to make this a little simpler
      so marginal rate of substitution (MRS) basically means how much of B you're willing to sacrifice for gaining one more unit of A. say presently you're purchasing 1 unit of A and 10 units of B, since you're consuming very less of A as compared to B, you'd want more of A and you'd be willing to sacrifice a lot of B to gain 1 more unit of A
      so let's say you sacrifice 5 units of B for 1 unit of A so your MRS will be 5/1=5
      now you have 2 units of A and 5 of B
      when you compare the two now you're consuming comparable amounts of both
      if you could gain one more unit of A now you wouldn't be as willing to sacrifice a lot of B for that since the amount of B you have now is lesser than what you had before (ie 10) so you could say B becomes 'dearer' to you now that you have less of it.
      so now to gain one more unit of A say you're willing to sacrifice only 2 units of B. now your MRS will be 2/1=2
      so you see to consume more and more of A you'd be willing to sacrifice less and less of B and your MRS would keep on decreasing
      since MRS represents the slope of your indifference curve you can say that the slope of the curve keeps on decreasing and that's why your plot cannot be a straight line it has to be a curve and since MRS ie the slope is constantly decreasing, it's a convex curve
      I really hope I was able to explain this to you i tried to make this as easy as I could
      bye:)

  • @adriansrsa90
    @adriansrsa90 3 роки тому

    Daniel Mehta

  • @elvis661
    @elvis661 Рік тому

    thanks for the contents, it would be nicer if you could stop repeating yourself

  • @homiedontplaythat
    @homiedontplaythat 5 років тому +4

    Logic within economics, we're is my tylenol?

  • @Apollo_the_Zebra
    @Apollo_the_Zebra 8 років тому

    thank you soooo much

  • @toncamaj1721
    @toncamaj1721 5 років тому +7

    How are comments from 3/5 years ago but video was uploaded 6 months ago how did u do that

    • @jamdhere2755
      @jamdhere2755 4 роки тому +4

      Time travel

    • @leoabby0084
      @leoabby0084 3 роки тому

      He's a founding member of Illuminati!!! 🤫🤫
      (*dont tell anyone*)

    • @itunuoluwao.7561
      @itunuoluwao.7561 7 місяців тому +1

      He edited the video which makes it more recent as at then.
      So whenever you edit any already existing video the date will change to the new one

  • @lukamilosevic7864
    @lukamilosevic7864 5 років тому

    Merci beaucop!

  • @omarslive4275
    @omarslive4275 5 років тому

    Thank you

  • @Oksana-mw9vj
    @Oksana-mw9vj 4 роки тому

    Is it possible to make a long story short. It is madness.

  • @Kethlylopez
    @Kethlylopez Місяць тому

    How does it become negative 5?

  • @zainalii
    @zainalii 4 роки тому +1

    I have a question why curve is of convex shape?

    • @ivyrocks8518
      @ivyrocks8518 4 роки тому +1

      Because the MRS diminishes due to the law of DMU

  • @FlorinHulpoi
    @FlorinHulpoi 10 днів тому

    I LUV U

  • @francescomondini7065
    @francescomondini7065 5 років тому

    But the marginal rate of substitution is that times -1

  • @ciaagency4818
    @ciaagency4818 4 роки тому

    is the slope in other words is marginal rate of substitution the same thing as opportuniy cost?

  • @MrMarkgyuro
    @MrMarkgyuro 5 років тому

    great explanation!

  • @hasnainkhan6728
    @hasnainkhan6728 4 роки тому

    Anyone explain me how does the TU is equal . I don't understand. Help me if you know

  • @KartingApexKing
    @KartingApexKing 8 років тому +1

    Why is this unlisted -_-

  • @peachstheticss
    @peachstheticss 10 місяців тому

    Didn't get it

  • @aneezamistry7748
    @aneezamistry7748 4 роки тому

    Hello r u God

  • @diegoamores9295
    @diegoamores9295 4 роки тому +1

    Are you taking into account the non-satiable assumption? because it seems like you arent, because if u would, I think that the two points on your indifference curve can't coexist on the same curve. thx for anybodies reply

  • @hanswurstfriz
    @hanswurstfriz 3 роки тому

    so how exactly do I draw the Indiffrence curve?

    • @nikhilkolhe2064
      @nikhilkolhe2064 3 роки тому +1

      @hanswurstfriz
      Take the two goods whose preference you want to analyze on a co-ordinate plane. Then select any arbitrary point (x1,y1) on the plane. Now move some distance x' in any direction and question if you are better off or worse off at the point (x1+x', y1) as compared to (x1,y1). If the answer is yes then think how should I move(y') in y direction so that I am neither better off nor worse of than (x1,y1). You will now arrive at point (x1+x',y1+y'). At this point you are just indifferent in your preference as compared to (x1,y1). Join these two points and you have a section of your indifference curve. Now repeat this gazillion times 😋

  • @nasppsan
    @nasppsan 4 роки тому +1

    So say you have a bunch of combinations of two goods right, and you have an arbitrary measurement of utility. Now what would happen if no two combinations produced the same utility? Would there be no indifference curve?

    • @bunchberry_
      @bunchberry_ 3 роки тому +6

      Indifference curves are assumed to be true. Doesn't matter if they're actually true or not. Microeconomics is very abstract.

  • @keytoniayorke185
    @keytoniayorke185 3 роки тому

    Why didn’t my lecturer just say dat 🤦🏾‍♀️

  • @MuhammadIsmail-qd7me
    @MuhammadIsmail-qd7me 3 роки тому

    👍

  • @brieelise5402
    @brieelise5402 2 роки тому

    The ending confused me

  • @jessiemayfield6749
    @jessiemayfield6749 5 місяців тому

    I need to know how to find how many of both I can get with a budget and make a budget line. This video is all concept and no execution. 🤦🏽‍♀️

  • @strawberrytotalcoke
    @strawberrytotalcoke Рік тому

    Iron man: im indifferent

  • @TumbaCool-c4k
    @TumbaCool-c4k Місяць тому

    Why does he sound like VladTv😅?

  • @helinasna2124
    @helinasna2124 3 роки тому

    ı love you/ ı hate my teacher

  • @meow1990_2
    @meow1990_2 7 років тому +5

    No offense. But I would strongly suggest you illustrated these videos with animations / pictures, rather than hand writing. It gets quite tedious after a while. Other than that, keep up the good job!

  • @mikehollowayuk
    @mikehollowayuk 2 роки тому +2

    No man. This is terrible. Why is it useful? Why do we need it? Where are the examples? Where was it famously used? Sorry. All the comments are "this is awesome" I suggest groupthink. 😊

  • @ShivamAgrawal-e8u
    @ShivamAgrawal-e8u Рік тому

    NO I DONT WANT TO EXPLORE BC

  • @samanthabent2983
    @samanthabent2983 3 роки тому

    Thank you

  • @thekaisernick
    @thekaisernick 4 роки тому

    Thank you!!!

  • @gangaramerra4880
    @gangaramerra4880 5 років тому

    Thank you sir

  • @nanaaddonkansah7220
    @nanaaddonkansah7220 Рік тому

    Thank you.☺