Derive a Demand Function From a Utility Function

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  • Опубликовано: 11 сен 2024
  • Learn how to derive a demand function form a consumer's utility function. In this problem, U = X^0.5 + Y^0.5.

Комментарии • 76

  • @Robertchaseman
    @Robertchaseman 9 лет назад +8

    Órla Mannion, the method will work for quasilinear convex, cobb-douglass and perfect complements (optimum at x equals to y) because optimum is at the tangency where IDC is tangent to the budget constraint. This method won't work for perfect substitutes, max functions, and quasilinear concave because all 3 of them end up touching axes. Therefore our optimum would be on the boundary. Hope that helps

    • @supernana7263
      @supernana7263 4 года назад +1

      Hello, John. That sounded very knowledgeable but trust me when I tell you this, I have no idea what quasilinear and max functions and perfect substitutes are😂

    • @NILESHKUMAR-vg6gl
      @NILESHKUMAR-vg6gl 2 года назад

      😘

  • @takeflightbirdyy
    @takeflightbirdyy 7 лет назад +5

    'Demand for good x is the consumers income divided by this mess in the bottom' hahahahah describes this process perfectly

  • @laurysong131
    @laurysong131 4 года назад +16

    *"this mess in the denominator"* lmao

  • @orlamannion9320
    @orlamannion9320 10 лет назад +15

    Video is very helpful thank you - Just wondering if this applies only to Cobb Douglas utility functions or for perfect compliments and perfect substitutes too? Thanks!

  • @John-lg9pt
    @John-lg9pt 3 года назад +2

    really awesome video, thanks so much for helping me, and many others like me, out

  • @taekiotan9158
    @taekiotan9158 3 года назад +1

    thanks, I really couldn't remember exactly how to do it so this helped a lot :)

  • @marc1mueller
    @marc1mueller 8 лет назад +7

    this is class cheers. this is 2nd year university stuff lol

  • @mirashulman1688
    @mirashulman1688 4 года назад +1

    thank you this helped a TONNN!!!

  • @parulmahawar9132
    @parulmahawar9132 5 лет назад

    Keep creating videos like this. Very helpful.

  • @stephaniet1308
    @stephaniet1308 3 года назад

    dang really helped me out in understanding thank you

  • @elnaesembe3438
    @elnaesembe3438 5 лет назад

    Thank you it really helped to better my understanding

  • @insertmispeltname
    @insertmispeltname 8 лет назад

    Thank you for your existence!!

  • @adityamisra7702
    @adityamisra7702 2 года назад

    Thanks for the help

  • @tushargupta2356
    @tushargupta2356 4 года назад

    Is there a situation where we cannot use martilian demand

  • @afiafarjanapromi2665
    @afiafarjanapromi2665 8 лет назад

    Can we figure out if these two goods are related in consumption from from the demand function?

  • @davidgordon2528
    @davidgordon2528 11 месяцев назад

    Awesome. Thank you!

  • @advaitshanker8498
    @advaitshanker8498 3 года назад

    my prof said that for u = x^0.5+y^0.5 the demand curve would be x = i/px (py/px+py)? i don't get it

  • @Tynted
    @Tynted 9 лет назад

    Extremely helpful. Thanks!

  • @wickedprophet9839
    @wickedprophet9839 6 лет назад +3

    Now what if the utility function is U= xy

    • @TheMrHirni
      @TheMrHirni 5 лет назад

      same concept same steps

  • @odd965
    @odd965 7 лет назад

    Many thanks. It's helpful.

  • @anviettop
    @anviettop 3 года назад

    thanks, very helpful

  • @Boellemids
    @Boellemids 8 лет назад

    you're a lifesaver

  • @jaredgreathouse3672
    @jaredgreathouse3672 Год назад

    Why do the .5s cancel at 3:19?

  • @enriquesanzposse6197
    @enriquesanzposse6197 9 лет назад +2

    really useful!! However I have a question: why is the utility function u=x^0.5+y^0.5? I hope you can answer!

    • @pronkers2038
      @pronkers2038 8 лет назад +1

      +Enrique Sanz Posse Because an alternate form of square root is to the power of .5

  • @jatinchauhan9349
    @jatinchauhan9349 4 года назад

    Thank you very much!!!!

  • @stellaliu2689
    @stellaliu2689 Год назад +1

    this is sooooooo helpfullll

  • @megapanka
    @megapanka 7 лет назад

    what if it is + x just? the derivative will just be one. Can I still go on with this method?

  • @serwaajuliet2138
    @serwaajuliet2138 8 лет назад +1

    Please can you show me the demand function for good X and Y when the utility function is given as U(X,Y)

    • @hellotheremyolfriend
      @hellotheremyolfriend 7 лет назад

      U (X,Y) can be written without the (X,Y), simply as U = *insert an equation*
      Either form mean the same thing; the parentheses just serve to define the variables that will be used in the equation. So, U(X,Z), can also just be written as U = *insert an equation*, but instead of Y, Z takes its place. Picking variables is arbitrary.

  • @mahatabchowdhury1451
    @mahatabchowdhury1451 9 лет назад +4

    When we first solved for y, was that the demand function for y

    • @behweiliang930
      @behweiliang930 8 лет назад +1

      Pls ans. I would like to find out about this too.

    • @Obsticate
      @Obsticate 6 лет назад +1

      No you repeat the process for Y that he did for X in order to find the demand function for Y

  • @XBLAZERS4LIFEX
    @XBLAZERS4LIFEX 9 лет назад

    Very helpful. Thank you

  • @poetryaddict1
    @poetryaddict1 6 лет назад

    very helpful, thank you so much!

  • @Natasha5050
    @Natasha5050 9 лет назад

    Thanks this really helped

  • @eramars5699
    @eramars5699 2 года назад

    What if the partial derivative of U with respect to Y is equal to 1. So we can’t solve for Y cause it’s cancelled out. As is the case for U = x^0.5 +y?

  • @seerat1000
    @seerat1000 9 лет назад +1

    hi, first I thank you for your great and clear explanations . what the difference between this example and the Cobb-Douglas Function ?

  • @王秋媛
    @王秋媛 7 лет назад

    Thank you so much for saving me!!

  • @CARMELOGP
    @CARMELOGP 8 лет назад

    shouldnt your first y be raised to -2?

  • @Ghostfacekill4h1994
    @Ghostfacekill4h1994 7 лет назад

    very helpful thank you!

  • @emmamorris9844
    @emmamorris9844 9 лет назад

    thank you! this was very helpful! :)

  • @gadisadheresa8905
    @gadisadheresa8905 2 года назад

    very helpful

  • @zihuizhu1722
    @zihuizhu1722 6 лет назад

    isnt du/dx= 0.5x`-0.5(y`0.5)?

  • @fb4680
    @fb4680 3 года назад

    Abim süpersin ya devam et

  • @chantalsmith5188
    @chantalsmith5188 8 лет назад

    Thank you!!!!!!

  • @calSDS
    @calSDS 7 лет назад

    Dear 1sportingclays,
    How would this work if the the utility function was u(x1 + x2) = (√x1) + x2 ?
    Thank you

    • @lucky-mud
      @lucky-mud 2 года назад

      I hope you found your answer, 4 years ago :)

  • @FinexUC
    @FinexUC 5 лет назад

    GOOD SHIT DAWG

  • @TortlePods
    @TortlePods 2 года назад

    wow it's actually so easy

  • @d.u.farooque786
    @d.u.farooque786 4 года назад +2

    helpful

  • @alexg4121
    @alexg4121 5 лет назад +7

    At this point economists are just making stuff up 😂

    • @supernana7263
      @supernana7263 4 года назад

      You tell me fam😂. They also debate for hours on end about abstract concepts and take home fat paychecks

    • @charlie-up2kj
      @charlie-up2kj Год назад

      😂😂😂😂

  • @MrSpidermonkey93
    @MrSpidermonkey93 9 лет назад

    cheers mate.

  • @glockram
    @glockram 7 лет назад

    Thank you very much, final who need refreshing after placement!

  • @upomarahman6654
    @upomarahman6654 4 года назад

    ❤❤❤

  • @fb4680
    @fb4680 3 года назад

    Ama yeni formatlarını beğenmedim boyle iyi anlatıyodun daha çok soru çözümü yaparmisin Türkiye'den selamlar

  • @joshuaw-p1985
    @joshuaw-p1985 2 года назад

    Please make a dumb person version of this as im dumb but want to learn..

  • @assemaliakbar7650
    @assemaliakbar7650 6 лет назад

    tema

  • @rushy9895
    @rushy9895 6 лет назад +4

    Anyone else notice this is wrong ?

    • @vittorianenna7377
      @vittorianenna7377 6 лет назад

      why?

    • @nyanruuu
      @nyanruuu 5 лет назад

      why is .5 square root = 1? at 5:13

    • @Anna_Subliminal
      @Anna_Subliminal 5 лет назад

      @@nyanruuu because 0.5 is the same thing as 1/2. And 1/2 square root is 1

    • @theflyingporpoise321
      @theflyingporpoise321 5 лет назад

      @@nyanruuu he just squared everything

    • @supernana7263
      @supernana7263 4 года назад +1

      @@Anna_Subliminal so it's ½ *squared* = 1 not ½ *_square root_* those are entirely different things