Question: Exercise: The function f(x, y ) = 2x2 - xy + y2 + 3x - 4y is a parabola in 3-dimensions. It has minimum value

Exercise: The function f(x, y ) = 2x2 - xy + y2 + 3x - 4y is a parabola in 3-dimensions. It has minimum value at the intersection of the lines 4x - y + 3 =0 and -x + 2y -4 =0. Find this minimum value

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