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
Very clear process but you need a bigger board so that you keep most of the work available.
@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.
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😎
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
27 күн бұрын
Thanks
Very good...
@JJONLINEMATHSCLASSchannel
27 күн бұрын
Thanks
Yes, you got me riveted. Well done 👍🏿
@JJONLINEMATHSCLASSchannel
27 күн бұрын
I'm glad!
Best maths teacher!
@JJONLINEMATHSCLASSchannel
28 күн бұрын
Thanks for the compliment
To easy method for understanding the concepts
@JJONLINEMATHSCLASSchannel
24 күн бұрын
Welcome
@dbrovnievic
21 күн бұрын
You are so beautiful and so smart and on top of that, you have such a good-mood.
👌
@JJONLINEMATHSCLASSchannel
26 күн бұрын
Thanks
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
26 күн бұрын
Nice approach 🤝🤝
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
27 күн бұрын
Thanks but that will make the video to be too long
please teach us from basics on derivatives
@JJONLINEMATHSCLASSchannel
26 күн бұрын
Ok. Noted.
Genius lady indeed!
@JJONLINEMATHSCLASSchannel
28 күн бұрын
Thanks
Where are you from
@JJONLINEMATHSCLASSchannel
26 күн бұрын
Nigeria
@JomilHussainBarbhuiya
26 күн бұрын
Wow nice love from India
🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲🇯🇲
@JJONLINEMATHSCLASSchannel
27 күн бұрын
U are welcome
If it is allowed to use the calculator, it can be solved within 5 minutes.