Chile | A Nice Algebra Problem | Math Olympiad

[@에스피-z2g]

Solution by insight
3^x=9x
3^x/x=9=3^2=3^3/3
x=3

[@prollysine]

-ln3/9=-ln3*x*e^(-ln3*x) , /* 3/3 left side , -3*ln3/3^3=-ln3*x*e^(-ln3*x) , -3*ln3*e^(-3*ln3)=-ln3*x*e^(-ln3*x) ,
-3*ln3==-ln3*x , x1=3 , test , OK ,
W(-ln3/9)=~ -0.140478921 , x2= -0.140478921/-ln3 , x2=~ 0.127869 , test , OK ,

[@giulio00010001]

Eccezzionale!!!!!!

[@beiranvand4066]

Please subscribe to my channel youtube.com/@bobmath1?si=wMfQoWlNWR1elSLF

[@alisadouk3604]

3^x=9x=3^2.x
3^x/x=3^2
3^(x-1)=3^2
x-1=2
x=3 vérifier 3^3=9.3=27

[@aldillion9]

NOOOOOO!!!!
3^x/x = (3^x)(x^-1) NOT 3^(x-1) !!!

[@zulalabdo]

What is the name thewhite board app?