Question

if f(x,y) is =abs(x^-y^2)/(x^2-y^2)

does LIM (x,y)--->(0,0) exist more like below

Answer 1

\[LIM \frac{ \left| x^{2}-y^{2} \right| }{ x ^{2}-y ^{2} }\]

Answer 2

I know that I have to come up with curves to show that it doesn't. What I do not get is how to get around the absolute value on top.