Japanese | A Nice math Olympiad algebra problem | Solve for a and b.

This is a nice Olympiad algebraic question. The solution was obtained using the laws of indices or exponentials. #matholympiadproblem #matholympiad #maths #matholympiadquestions #matholympiadpreparation #algebra

Пікірлер: 30

  • @user-pk4nk1et9h
    @user-pk4nk1et9h28 күн бұрын

    Very clear process but you need a bigger board so that you keep most of the work available.

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    28 күн бұрын

    Yes, you are right. But the board is big enough, what I need is a better camera that will get the whole board. Thanks.

  • @golddddus
    @golddddus25 күн бұрын

    Accelerated Girard-Newton method: x^2-(a+b)x+ab=0 (Vieta). x^2-x-1/2=0 x^2=x+1/2 (1) S(k)=a^k+b^k (1)*x x^3=x^2+x/2 ⇒ S(3)=S(2)+S(1)/2=2+1/2=5/2. (1)*x^2 x^4=x^3+(x^2)/2 ⇒ S(4)=S(3)+S(2)/2=5/2+2/2= 7/2 (1)*x^3 x^5=x^4+(x^3)/2 ⇒ S(5)=S(4)+S(3)/2=7/2+5/4=19/4 (1)*x^4 x^6=x^5+(x^4)/2 ⇒ S(6)=S(5)+S(4)/2=19/4+7/4=13/2 Acceleration is your solution, direct multiplication, instead of boring calculation S(7), S(8), S(9) S(10). By the way x^2-x+abx^0 =0 ⇒ S(2)-S(1)+ abS(0)=0 S(0)=a^0+b^0=2 ab=-1/2😎

  • @johnstanley5692
    @johnstanley569228 күн бұрын

    Could also use synthetic division: let g1=a + b - 1 (=0), g2=a^2 + b^2 - 2 (=0), g3= a^11 + b^11 =(?) 1st obtain p2(b) =remainder= (g2/g1) = 2b^2 - 2^b - 1 = 0 . (here use 'a' as independent to return function of 'b') 2nd step get remainder p10(b)= g3/g1. Only need coefficients: [11 -55 165 -330 462 -462 330 -165 55 -11 1] final step, compute remainder p10(b)/p2(b)= 989/32. Advantage? never need to obtain values of 'a' or 'b'.

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    27 күн бұрын

    Thanks

  • @eldoserenado458
    @eldoserenado45827 күн бұрын

    Very good...

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    27 күн бұрын

    Thanks

  • @BN-hy1nd
    @BN-hy1nd28 күн бұрын

    Yes, you got me riveted. Well done 👍🏿

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    27 күн бұрын

    I'm glad!

  • @wilfredy.pasile7022
    @wilfredy.pasile702228 күн бұрын

    Best maths teacher!

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    28 күн бұрын

    Thanks for the compliment

  • @Honeyshaf
    @Honeyshaf24 күн бұрын

    To easy method for understanding the concepts

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    24 күн бұрын

    Welcome

  • @dbrovnievic

    @dbrovnievic

    21 күн бұрын

    You are so beautiful and so smart and on top of that, you have such a good-mood.

  • @MYeganeh100
    @MYeganeh10026 күн бұрын

    👌

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    26 күн бұрын

    Thanks

  • @nasrullahhusnan2289
    @nasrullahhusnan228926 күн бұрын

    Problem solving outline given: a+b=1 and a²+b²=2 Outline: Find ab through (a+b)²=a²+b²+2ab Find a³+b³ through (a+b)³=a³+b³+3ab(a+b) Find a⁹+b⁹ through (x³+y³)³ Find a¹¹+b¹¹ though (x⁹+y⁹)(x²+y²)

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    26 күн бұрын

    Nice approach 🤝🤝

  • @prime423
    @prime42327 күн бұрын

    One can use other exponentials to get the result. It just takes more time. Its important to show students other possible ways to get the same result. For example, the sum of a exponent 2 +b exponent 2 to the fourth power!!

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    27 күн бұрын

    Thanks but that will make the video to be too long

  • @girmamumicha1642
    @girmamumicha164226 күн бұрын

    please teach us from basics on derivatives

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    26 күн бұрын

    Ok. Noted.

  • @wilfredy.pasile7022
    @wilfredy.pasile702228 күн бұрын

    Genius lady indeed!

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    28 күн бұрын

    Thanks

  • @JomilHussainBarbhuiya
    @JomilHussainBarbhuiya26 күн бұрын

    Where are you from

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    26 күн бұрын

    Nigeria

  • @JomilHussainBarbhuiya

    @JomilHussainBarbhuiya

    26 күн бұрын

    Wow nice love from India

  • @franklinbrown5625
    @franklinbrown562528 күн бұрын

    🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲

  • @JJONLINEMATHSCLASSchannel

    @JJONLINEMATHSCLASSchannel

    27 күн бұрын

    U are welcome

  • @augustopinochet6841
    @augustopinochet684127 күн бұрын

    If it is allowed to use the calculator, it can be solved within 5 minutes.