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Consider the following. f ( x, y) = 4x2 + 6xy + 8y2 Find the exact point (x, y) where f(x, y) has a possible relative maximum or minimum. Then use the second-derivative test to determine, if possible, the nature of f(x, y) at this point. If the second-derivative test is inconclusive, so state. ( x, y ) = (1 --Select- C Submit