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Seeing double

Calculus Level 3

\[\displaystyle\lim_{(x,y) \rightarrow (0,0)} \dfrac{xy^{4}}{x^{2} + y^{8}} = \ ? \]

\[\dfrac{2}{5}\] \[\dfrac{1}{2}\] \[\infty\] 2 Does not exist 1 0 \[-\infty\]

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by Brian Charlesworth

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