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Loving trigonometry
on 4 Oct 2021
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x=linspace(-1,1,4000)*pi/2;
y=(sqrt(cos(x)).*cos(200*x)+sqrt(abs(x))-0.7).*(4-x.^2).^0.01;
scatter(x,y,10,-y-x.^2,'filled'); axis equal off; colormap(spring)