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Question
\text { The function } k(x, y)=\frac{7 x^{8} y}{-2 x^{9}+9 y^{9}} \text { has no limit } as (x, у) — (0, 0). Show this by computing the limit of
the function along the two following paths: (a) t » (t, 0). (b) t → (t, t).
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