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What is the condition for the function attains maximum of two variables​

Answer»

A FUNCTION F of two variables is said to have a relative MAXIMUM (minimum) at a point (a, b) if there is a DISC centred at (a, b) such that f(a, b) ≥ f(X, y) (f(a, b) ≤ f(x, y)) for all points (x, y) that lie inside the disc.



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