55. Consider Figure 2). Estimate the points where the slope of the tangent line to this figure is zero. Use implicit differentiation to calculate the derivative to the Bifolium (x2 + y2)2 = 12x2y. Test your points where you guessed there should be a zero derivative. Did you guess correctly? Figure 1: The Folium of Descartes x3 + y' = 9ry -4 -2 0 -2- Figure 2: The Bifolium (x2 + 2)2 = 12x2y