Germany | Can you solve this ? | Math Olympiad X=? & Y=?

Пікірлер: 62

  • @jamesharmon4994
    @jamesharmon499421 күн бұрын

    I could instantly detect there were no real solutions. From eq 1, if squared results in x^2 + 2xy + y^2 = 36. But eq 2 says xy = 36. This means that x^2 + 72 + y^2 = 36. This means that x^2 + y^2 = -36. This is impossible in the real world.

  • @cosmolbfu67

    @cosmolbfu67

    17 күн бұрын

    yes, so the solutions of the equation are complex number

  • @renatosiqueiracardoso3285

    @renatosiqueiracardoso3285

    12 күн бұрын

    Afinal qual o valor de x e do y ?

  • @stevebeal73

    @stevebeal73

    8 күн бұрын

    I visualised the graphs in my head: a straight line and a hyperbola. It was quite easy to satisfy myself that there are no solutions in the real world.

  • @jamesharmon4994

    @jamesharmon4994

    7 күн бұрын

    @stevebeal73 Great idea. I never thought about it that way.

  • @besideyou.n
    @besideyou.n23 күн бұрын

    Thank you for the explanation! Your handwriting is beautiful and easy to read.

  • @learncommunolizer

    @learncommunolizer

    22 күн бұрын

    Thank you very much ❤️❤️❤️

  • @Kounomura
    @Kounomura17 күн бұрын

    The two-variable equation can be immediately reduced to a one-variable one, due to the symmetries. Let x=3+z, y=3-z. Thus (3+z)(3-z)=36 --> 9-z^2 =36 --> z = sqrt(-27) --> z= i*sqrt(27), ---> x=3+i*sqrt(27), y=3-i*sqrt(27)

  • @yapadek3098
    @yapadek309823 күн бұрын

    Using : "x and y are the two solutions of the equation x2-sx+p=0 with s=x+y abd p=xy", you could go directly to 2:20 ;-)

  • @hewhewman211
    @hewhewman21115 күн бұрын

    Корректно ли получать корни квадратного уравнения используя мнимую единицу?

  • @davereynolds739
    @davereynolds73921 күн бұрын

    After using the quadratic formula to get: x = (-(-6) +/- sqrt((-6)^2-4x1x36))/2 simplify by factoring out 36 from the radical to get: x = (6 +/- 6 x sqrt(1-4))/2 --> x = 3 +/- 3 x sqrt(-3) = 3 +/- 3i x sqrt(3)

  • @michellewelchman9245
    @michellewelchman924523 күн бұрын

    The more I listen and observe you Sir, the more I learn from your instruction. I'm getting to the point of seeing every step clearly and well. I believe I'm close to memorizing these problems and the steps. Thank you again for another video well done and showing the step by step process!

  • @vasilemihaila1620
    @vasilemihaila162023 күн бұрын

    Se folosește ecuația ajutătoare în “t” : t^2-S *t +P =0 Unde s= x+y=6 și P=36 Rădăcinile ecuației de gradul doi sunt valorile pentru x și y

  • @keescanalfp5143
    @keescanalfp514323 күн бұрын

    thank you, so nice a problem ! well somewhat easier than x² - 6x + 6² = 0 would be to solve the equation x² - px + p² = 0 , then we would not forget to gather the factors p² under the √ sign . now at 3:25 we have only ±√ [(-6)² - 4(1)(+6²)] = ±√ (6² - 4·6²) = ±√ 6²(1 - 4) = ±6√(-3) . what we can see is that we do not need to first compute and later factor those values of the large numbers of 4×6² and 3×6² . so let us leave 6² simply be 6² . so nice .

  • @Mb-logic
    @Mb-logic3 күн бұрын

    Good

  • @matthewcastleton2263
    @matthewcastleton226318 күн бұрын

    Why in god’s name do you continually use the quadratic formula? It’s way easier to get the roots via completing the square. I got the same two roots you did for x w/out having to use the quadratic formula and I got it much faster

  • @SquidwardTentacles_0
    @SquidwardTentacles_023 күн бұрын

    math's can't stop from amazing me. thank you for you explanation

  • @learncommunolizer

    @learncommunolizer

    22 күн бұрын

    Thank you very much ❤️❤️❤️

  • @user-df3tk5ty2b
    @user-df3tk5ty2b9 күн бұрын

    А разве корень квадратный из отрицательного числа вычисляется? Как в данном примере из минус 108?

  • @user-ml2bn6oi3p

    @user-ml2bn6oi3p

    9 күн бұрын

    Ещё как.

  • @user-rw1ic8ez6x

    @user-rw1ic8ez6x

    9 күн бұрын

    Там мнимая единица. Единственная хитрость в этом уравнении. Это реально уровень олимпиады? Для пятого класса если только.

  • @Yureka-ox5jn
    @Yureka-ox5jn23 күн бұрын

    💯💯💯

  • @learncommunolizer

    @learncommunolizer

    22 күн бұрын

    ❤️❤️❤️

  • @Funkybassuk
    @Funkybassuk23 күн бұрын

    Love it 👍🏽

  • @learncommunolizer

    @learncommunolizer

    22 күн бұрын

    Thank you very much ❤️

  • @Yureka-ox5jn
    @Yureka-ox5jn23 күн бұрын

    Nice❤❤✔️✔️

  • @learncommunolizer

    @learncommunolizer

    22 күн бұрын

    Thanks 🤗

  • @nasrullahhusnan2289
    @nasrullahhusnan228922 күн бұрын

    Math Olympiad? Such a simple problem? Subsitute y or x from xy=36 to x+y=6 yielding a quadratic equation in x or y. Then apply formula for getting roots of a quadratic equation. No challenge to think hard in solving.

  • @MENSA.lady2
    @MENSA.lady214 күн бұрын

    No possible solution. If X+Y =6 then both x and Y must be less than 6. Therefore XY must be less than 36.

  • @camm2668

    @camm2668

    11 күн бұрын

    It would be better to watch the whole video before saying nonsense things. The imaginary numbers are there for some reason.

  • @valeriykotlov2763
    @valeriykotlov276317 күн бұрын

    Author forgot to explain to people familiar with complex numbers that 1 times 1 is 1!

  • @GAMEWORLD6583
    @GAMEWORLD658322 күн бұрын

  • @anemone104
    @anemone10414 күн бұрын

    No two numbers adding to 6 can be multiplied to give 36. So what on earth did this prove?

  • @mircoceccarelli6689
    @mircoceccarelli668916 күн бұрын

    👍👍👍😁🤪👋

  • @annoyingbstard9407
    @annoyingbstard940719 күн бұрын

    I just feel happy he seems unable to do simple mental arithmetic.

  • @ewgewg7715
    @ewgewg771515 күн бұрын

    Это точно задание для Олимпиады? Это же обычная система уравнений. Не помню класс 5~6 наверное

  • @nikitakashirin2117

    @nikitakashirin2117

    8 күн бұрын

    Там всё идёт к комплексным числам, в 6-м классе вроде ещё не проходят )

  • @user-mj8of3jd9u

    @user-mj8of3jd9u

    6 күн бұрын

    Таков уровень образования в Европе...

  • @ewgewg7715

    @ewgewg7715

    3 күн бұрын

    @@nikitakashirin2117 даже если и корнями уравнения будут комплексные числа, это всё равно обычная школьная программа. Только класс постарше

  • @nikitakashirin2117

    @nikitakashirin2117

    3 күн бұрын

    @@ewgewg7715 что ж, тут не поспоришь)

  • @lw1601
    @lw16018 күн бұрын

    真面目ですね〜❤

  • @MaiTran-om6uj
    @MaiTran-om6uj16 күн бұрын

    Phương trình vô nghiệm.

  • @user-er9fx3qx7n

    @user-er9fx3qx7n

    14 күн бұрын

    No real solution, certainly.

  • @Irtsak
    @Irtsak15 күн бұрын

    Vieta ....... just apply ......

  • @amirhosseinzahedi
    @amirhosseinzahedi4 күн бұрын

    Dear sir Excuses me Seems like your solution is wrong. I vrified your conclusions. X=3+3i√3 Y=3-3i√3 X×y=36 (3+3i√3)(3_3i√3)=36 (a+b)(a_b)=a^2_b^2 36=(3×9)_9 36=18 It is wrong.

  • @alexanderma7157
    @alexanderma715722 күн бұрын

    Square the first equation

  • @jamesharmon4994

    @jamesharmon4994

    21 күн бұрын

    If you square eq1 and then sub eq 2 into it, you get x^2 + y^2 = -36.

  • @user-iu7hr7lo2l
    @user-iu7hr7lo2l9 күн бұрын

    10минут потерянного времени

  • @johnn336
    @johnn33615 күн бұрын

    Solution is a figure

  • @YahaaMahmod
    @YahaaMahmod23 күн бұрын

    انا اختك من يمن والله ماتكلمت الا من جوع ومن ضيق الحال انا وكامل اسرتي تشردنا من بيوتنا بَسَبَبَ الَحَرَبَ نَحَنَ فَيَ حَالَهَ لَايَعَلَمَ بَهَا الَا الَلَهَ حَسَبَنَا الَلَهَ وًّنَعَمَ الَوكيَلَ فَيَ مَنَ اوًّصَلَنَا الَى هَاذا الَحَالَ 💔💔وًّالَلَهَ الَعَظَيَمَ مَا كتَبَتَ هَذا الَمَنَاشَدَهَ غَيَرَ مَنَ الَضَيَقَ وّالَفَقَر يَاعَالَمَ حَسَوّا فَيَنَا ارَجَوّكمَ وّالَلَهَ الَعَظَيَمَ رَبَ الَعَرَشَ الَعَظَيَمَ انَه الَاكلَ مَا فَيَ عَنَدَيَ بَالَبَيَتَ وًّالَلَهَ يَا اخَوّانَيَ انَهَ اخَوًّنَيَ بَقَعَدَوًّ بَالَيَوًّمَيَنَ مَافَى اكلَ وًّالَلَهَ وًّضَعَنَا كثَيَرَ صَعَبَ نَحَنَ 4 نَفَرَ دَاخَلَ الَبَيَتَ وًّابَيَ مَتَوًّفَيَ وًّلَا يَوًّجَدَ مَنَ يَعَوًّلَ عَلَيَنَا وًّسَاكنَيَنَ فَيَ بَيَتَ اجَارَ لَانَسَتَطَيَعَ دَفَعَ الَاجَارَ الَلَيَ بَاقَيَ عَلَيَنَا ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' اخي اول كلامي انا اقسم بالله على كتاب الله اني لااكذب عليك ولا انصب ولا احتال اني بنت يمنيه نازحين انا واسرتي بيننا ایت الشهرب 15 الف يمني والان علينا 60 الف حق 4 شهور وصاحب البيت من الناس الي ماترحم والله يا اخي انه يجي كل يوم يبهدلنا ويتكلم علينا ويريد من البيت للشارع لانناماقدرنا ندفعله الأجار شافونا الجيران نبكي ورجعو تكلمو الجيران ومهلنالاخره الأسبوع معادفعنا له حلف يمين بالله هذا بيخرجنا إلى الشارع رحمه واحنا. بلادنا بسبب هذا الحرب ولانجد قوت يومنا وعايشين اناوامي واخوتي سفار والدنا متوفي الله يرحمه ومامعنا أحد في هذا الدنيا جاانبنا في هذه الظروف القاسيه اخوتي الصغار خرجو للشارع وشافو الجيران ياكلو واوقفو عند بابهم لجل يعطوهم ولو كسره خبز والله الذي له ملك السموات والارض انهم غلفو الباب وطردوهم ورجعو یبکو ایموتو من الجوع ما احد رحمهم وعطلة ردها لقمت عیش والان لوما احدنا ساعدنا في إيكيلو دقيق اقسم بالله انموت من الجوع فيا اخي انا دخيله على الله ثم عليك واريد منك المساعده لوجه الله انشدك بالله تحب الخير واتساعدني ولو ب 500 ريال يمني مع تراسلي واتساب على هذا الرقم 716688223)00967 وتطلب اسم بطاقتي وترسلي ولاتتاخر وايعوضك الله بكل خير اخواني سغار شوف كيف حالتهم وساعدنا وأنقذنا قبل أن يطردونا في الشارع تتبهدل أو نموت من الجوع وانا واسرتي نسالك بالله لولك مقدره على مساعد لاتتاخر علينا وجزاك الله خير!(❤ω❤)(♡-_-♡)♤╭[☉﹏☉]╮︵ヽ(`Д´)ノ︵(¬_¬)⊙﹏⊙(*˘︶˘*)┬──┬( ˘▽˘)っ♨✯☆♤✺(❤(¬_¬)(¬_¬)((づ ̄ ³ ̄)づ●●∴∴∴●∴∴●(:):٪'~»❤٪;)(")..

  • @thinksomuch
    @thinksomuch5 күн бұрын

    no real root

  • @alexeyevgenevich9821
    @alexeyevgenevich982113 күн бұрын

    Так ежу понятно, что корней нет

  • @user-qw4hb7vj7t
    @user-qw4hb7vj7t17 күн бұрын

    Rather easy equations system for Soviet school.

  • @bozqurd8039
    @bozqurd803920 күн бұрын

    Mənim kağıza heyfim gəlir.

  • @MultiAw2010
    @MultiAw201010 күн бұрын

    You are wrong

  • @nickkelly6957
    @nickkelly695715 күн бұрын

    Как же все нудно. Для кого это объяснение? Для неучей?

  • @user-ug4qp7ly4y
    @user-ug4qp7ly4y10 күн бұрын

    X+У=Й

  • @user-mg5te3fn7l
    @user-mg5te3fn7l20 күн бұрын

    Сомножитель " -1 " под корнем должен быть в скобках ! Неучи !

  • @davereynolds739
    @davereynolds73921 күн бұрын

    After using the quadratic formula to get: x = (-(-6) +/- sqrt((-6)^2-4x1x36))/2 simplify by factoring out 36 from the radical to get: x = (6 +/- 6 x sqrt(1-4))/2 --> x = 3 +/- 3 x sqrt(-3) = 3 +/- 3i x sqrt(3)

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