2946.sagews

plot(x^2,-4,4)

plot.options

{'fillalpha': 0.5, 'detect_poles': False, 'plot_points': 200, 'thickness': 1, 'alpha': 1, 'adaptive_tolerance': 0.01, 'fillcolor': 'automatic', 'adaptive_recursion': 5, 'exclude': None, 'legend_label': None, 'rgbcolor': (0, 0, 1), 'fill': False}

plot(x^2-1,-3,3,color='red',thickness=2)