In Exercise, solve the given problem.
The radius of curvature at the point (x, y) on the graph of y = f(x) is given by
A certain roadway follows the parabola y = 1.2x − x2 for 0 < x < 1.2, where x is measured in miles. Find R for x = 0 .2 mi and x = 0.6 mi. See Fig. 1.
Fig. 1
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