x = var('x')
f = (sqrt(cos(x))*cos(400*x)+sqrt(abs(x))-0.4)*(4-x*x)^0.1
heart = [plot(f, xmin=-2, xmax=2, ymin=-2, ymax=2, gridlines = true)]
p=sum(heart)
p.show()
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verbose 0 (4128: plot.py, generate_plot_points) WARNING: When plotting,
failed to evaluate function at 44 points.
verbose 0 (4128: plot.py, generate_plot_points) Last error message: ''
verbose 0 (4128: plot.py, generate_plot_points) WARNING: When plotting, failed to evaluate function at 44 points.
verbose 0 (4128: plot.py, generate_plot_points) Last error message: ''
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