Question

Use the Epsilon Delta definition to find the limit

Answer 1

\[\lim_{(x,y) \rightarrow (0,0)}\frac{ \sin(x+y) }{ (x+y) }=1\]

Answer 2

So I turned it into sin(u)/u so it's easier to work with single variables.

Answer 3

Now I am at the point where I get this: