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## Homework Statement

Hey I'm trying to prove the rigorous definition of limit for the following function:

Lim (x,y) approaches (1,1) of f(x,y)=(y*(x-1)^(4/3))/((x/1)^2+abs(x)*y^2)

## Homework Equations

abs(x^2)<abs(x^2 +y^2)

## The Attempt at a Solution

I know the rigorous definition of limit. I tried to constraint the denominator by eliminating one of the terms since both are greater than zero, however, I was left with what seemed like terms that could not be constrained. I never really done a rigorous definition of limit that's not centered on (0,0). I would appreciate some help.