I was given the two equations f=x^2y^2z^2 and x^2+y^2+z^2=1
(I'll use 'u' to be equal to lambda)
and then set up my equations to be x^2y^2z^2-ux^2-uy^2-uz^2+u
taking the partial derivatives I got
I cant seem to find a way to solve this system of equations, can anyone? Or tell me what I did wrong?