Question: (6) Let S = {(x, y) = R | 3 y 6} C R be the strip between two lines in the plane. Let

(6) Let S = {(x, y) = R | 3 y 6}

(6) Let S = {(x, y) = R | 3 y 6} C R be the strip between two lines in the plane. Let d: SR be the distance from a point (a, b) ES to the boundary: d(a, b) min ||(a, b) - (x, y)||. (x,y) EOS Show that d is a concave function on S. Hint: Find a formula for d.

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