Easy# Limit Of $\sin(x^2+y^2) / (x^2+y^2)$ At The Origin.

MVCALC-G3FTS1

For real $x$ and $y$ such that $(x,y)\ne (0,0)$ let:

$$f(x,y)=\cfrac{\sin(x^2+y^2)}{x^2+y^2}$$

Can $f(0,0)$ be defined in such a way as to make $f$ continuous at the origin $(0,0)$?