Let ƒ : R² → R and suppose that lim f (x, y) = -10. (x,y)→(3,0) What can you say about the value ƒ (3,0)? Nothing can be said about the value ƒ (3, 0). ƒ (3,0) = -10 f(3,0) = -10 f may or may not be continuous at (3, 0). f is continuous at (3, 0).

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