5-(a) Find all points in the first quadrant where the line y - x = 0...

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5-(a) Find all points in the first quadrant where the line y - x = 0 crosses the graph of the curve (x + y) = 4xy (2 pts.) (b). Show, analytically and with no reference to its graph that the curve has vertical tangent lines at every point found in part (a). (4 pts.) 5-(a) Find all points in the first quadrant where the line y - x = 0 crosses the graph of the curve (x + y) = 4xy (2 pts.) (b). Show, analytically and with no reference to its graph that the curve has vertical tangent lines at every point found in part (a). (4 pts.)