Question

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The function f(x, y) = xy is continuous​

Answer 1

Answer:

f(x, y) = xy. Prove that f is continuous at each point p = (p1, p2) of R2. < \xy -p1y\+ \p1y -p1p2\= \y\\x -p1\+ \p1\\y -p2\. Thus we obtained that if \(x, y) -(p1, p2)\< 了 then \xy -p1p2\< ε and the proof is complete