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on 16 Oct 2022
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x = 1:19;
Y = 9.04*x-0.22222;
figure
ezsurf('(x^2 + y^2)^2 - x^2 + y^2', [-1.1, 1.1], [-1.1, 1.1])
colormap([0 0 1])
title({'Lemniscate Function', '(x^2 + y^2)^2 - x^2 + y^2'})
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