(e) Let f: R² →→→ R be a function where all second order partial derivatives exist and are not continuous for all points 8 f (x, y) = R². Then -(x, y) = (x, y) for all points (x, y) = R². dydx True False (f) Let f: R² (x, y) = R². Then True False 2²f axdy R be a function where all second order partial derivatives exist and are continuous for all points 2²f -(x, y) dydx 8² f Əxdy (x, y) for all points (x, y) = R².

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