Find the minimum or maximum value of f (as indicated) subject to the given constraint.Minimum of f(x, y) = x2 + 2y2 - xy,subject to x + y = 8
A. Minimum = 28 at (5, 3)
B. Minimum = 25 at (2, 6)
C. Minimum = 25 at (6, 2)
D. Minimum = 28 at (3, 5)
Answer: A
Mathematics
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