Find any relative extrema.f(x, y) = x2 + xy + y2 - 3x + 2
A. f(2, -1) = -1, relative minimum
B. f(2, -1) = -1, relative maximum
C. f(-2, 1) = 11, relative maximum
D. f(-2, 1) = 11, relative minimum
Answer: A
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