Famous Curve The graph of the pear-shaped quartic b?y? = x°(a – x), a, b > 0 %3D is shown above. (a) Explain how you could use a graphing utility to graph this curve. (b) Use a graphing utility to graph the curve for various values of the constants a and b. Describe how a and b affect the shape of the curve. (c) Determine the points on the curve at which the tangent line is horizontal.

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