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Brent method example. Brent method example svg Graph of xs linspace ys xs xaxis clf hold on plot 'k' for if plot 'k' text intstr 'HorizontalAlignment' 'center' 'VerticalAlignment' 'top' 'FontSize' end end yaxis plot 'k' for if plot 'k' text intstr 'HorizontalAlignment' 'right' 'VerticalAlignment' 'middle'