Please show me how to evaluate limit of this function$\lim\limits_{(x,y)\to(+\infty,+\infty)}\frac{x+y}{x^2-xy+y^2}$.
I think it doesn't exist but I don't know how to solve it.
Please show me how to evaluate limit of this function$\lim\limits_{(x,y)\to(+\infty,+\infty)}\frac{x+y}{x^2-xy+y^2}$.
I think it doesn't exist but I don't know how to solve it.