y - x + 3 y -2 1 x 4 y x - 1 y x + 4 f(x, y) = x - 2y f(x, y) = -x + 4y
Chapter 3, Problem 4(choose chapter or problem)
y - x + 3 y -2 1 x 4 y x - 1 y x + 4 f(x, y) = x - 2y f(x, y) = -x + 4y
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