Stationary Points - Maximum Volume of a Box : ExamSolutions Maths Revision

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  • Опубліковано 23 гру 2024

КОМЕНТАРІ • 39

  • @SirjosephZ
    @SirjosephZ 9 років тому +32

    I don't know why this was so enjoyable. Thank you.

    • @ExamSolutions_Maths
      @ExamSolutions_Maths  9 років тому +15

      +Joseph Simeon Maths can be enjoyable - believe it or not.

    • @aneeqkhan8627
      @aneeqkhan8627 8 років тому +3

      +ExamSolutions kinda peaceful

  • @MoofPoofFoof
    @MoofPoofFoof 10 років тому +7

    Thanks for this video, it helped a lot, but I just have one question:
    when you're finding the equation for the surface area of the box, I noticed that you only took into account the outsides of the box, because you added each side once. In practical circumstances, wouldn't you include the surface area of the insides of the box as well by doubling each side, so the equation would instead be 486=2(2x^2+2xh+4xh)?

    • @bradleywoods3742
      @bradleywoods3742 4 роки тому +1

      Usually the thickness of the box is negligible

    • @vedantdesai9395
      @vedantdesai9395 4 роки тому

      They have mentioned open box in question

    • @variszarins
      @variszarins 2 роки тому

      @@vedantdesai9395 meaning what?

    • @vedantdesai9395
      @vedantdesai9395 2 роки тому

      @@variszarins meaning that open side should not be consider

    • @variszarins
      @variszarins 2 роки тому

      @@vedantdesai9395 what difference does it make, open or closed? It makes more sense not to take interior into account when the box is closed

  • @sea5205
    @sea5205 5 років тому +6

    So helpful!

  • @MightyTorten
    @MightyTorten 10 років тому +1

    Fantastic video seeing as I've been having trouble with this.

  • @navalporcupine2426
    @navalporcupine2426 7 років тому +13

    It seems that you only take into account the surface area of the outside walls of the box and not the inside? Why is this?

    • @Ikiguyy
      @Ikiguyy 5 років тому

      Yeah thats what I thought too

    • @vedantdesai9395
      @vedantdesai9395 4 роки тому

      It is mentioned that it is an open box

    • @McTommoOG
      @McTommoOG 3 роки тому

      Vedant Desai the question he used looked shortened. All my Qs state whether the area given is external or internal

  • @himayuh2776
    @himayuh2776 4 роки тому +1

    Thank you so much!!!!

  • @kaylakenan6973
    @kaylakenan6973 3 роки тому

    Very helpful. Thank you😊

  • @chromosome5250
    @chromosome5250 3 роки тому

    Thank you so much sir this helped a lot🙏🙏🙏

  • @savinagunaratne1601
    @savinagunaratne1601 4 роки тому

    Thank You so much

  • @ayesha7786
    @ayesha7786 5 років тому

    what all volume formulas do you reckon we'll need in the exam?

    • @ExamSolutions_Maths
      @ExamSolutions_Maths  5 років тому +2

      Volumes of prisms ie (cuboids, cylinders) cones, spheres

    • @ayesha7786
      @ayesha7786 5 років тому +1

      @@ExamSolutions_Maths Thanks!! :)

  • @psychologycodes
    @psychologycodes 4 роки тому

    thankyou!

  • @mr.loooka3684
    @mr.loooka3684 8 років тому

    Great video
    thanks alot

  • @everythinglost123
    @everythinglost123 9 років тому

    thank you so much!

    • @ExamSolutions_Maths
      @ExamSolutions_Maths  9 років тому

      everythinglost123 That's okay. I am glad it helped and thanks for using.

  • @LiveCustoms
    @LiveCustoms 8 років тому +2

    Will this come up in C1 ? because if it does im screwed lol.

  • @ASLUHLUHC3
    @ASLUHLUHC3 6 років тому +6

    This question is flawed. What if someone included the interior sides of the box when calculating the surface area, since it is open

  • @ontheway5792
    @ontheway5792 7 років тому +1

    But u chose V against X ? Not H ?

  • @MirfandaTalks
    @MirfandaTalks 9 років тому +7

    ahh this is so long lol

  • @ajjaaajajjaj6860
    @ajjaaajajjaj6860 8 років тому +1

    this is very long

  • @jackza8901
    @jackza8901 8 років тому +4

    this is hard :/