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What is a conditional double limit and how to compute it for

\begin{equation*} \lim_{(x,y)\rightarrow\infty,x\leq y}\frac{2x-1}{x-1}+\frac{x}{y}? \end{equation*}

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    What's $k$ supposed to be?2010-09-12
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    Actually, $k$ should be $x$. I corrected that.2010-09-13
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    You should state your definition for $\lim_{(x,y)\rightarrow \infty} f(x,y)$, because it's not natural. I mean, on a plain, what it $\infty$? Very far on right top-righthand corner, top-lefthand? We usually defined the limit to infinity as $\left\| (x,y) \right\| \rightarrow \infty$.2010-09-13

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