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## Homework Statement

lim of (y^2)(sin^2x) /(x^4+y^4) as (x,y) approaches (0,0)

## Homework Equations

## The Attempt at a Solution

I got the limit as (x,y) approaches (0,y) and as (x,y) approaches (x,0), and it equals 0. But now I'm unsure of what to to next. I think it was the limit as (x,y) approaches (x,x) when x=y, but i get sin^2x / 2x^2