File:Brent method example.png
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Summary edit
Graph of (x + 3)(x − 1)2, used to illustrate Brent's method. Created by Jitse Niesen in Matlab.
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Matlab code edit
f = @(x) (x+3).*(x-1).^2; xs = linspace(-5,2.5); ys = f(xs); % x-axis clf; hold on; plot([-5 3], [0 0], 'k'); for k = -4:2 if k ~= 0 plot([k k], [0.7 -0.7], 'k'); text(k, -1, int2str(k), 'HorizontalAlignment', 'center', ... 'VerticalAlignment', 'top', 'FontSize', 12); end; end; % y-axis plot([0 0], [-35 15], 'k'); for k = -30:5:10 if k ~= 0 plot([0.1 -0.1], [k k], 'k'); text(-0.15, k, int2str(k), 'HorizontalAlignment', 'right', ... 'VerticalAlignment', 'middle', 'FontSize', 12); end; end; % graph plot(xs,ys, 'Linewidth',3); axis([-4.5 2.1 -31 11]); axis off; print -dpng 'brent_tmp.png'; system('convert -trim +repage brent_tmp.png brent.png');
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:21, 17 June 2006 | 932 × 735 (8 KB) | Jitse Niesen (talk | contribs) | remove offset | |
09:03, 17 June 2006 | 932 × 735 (8 KB) | Jitse Niesen (talk | contribs) | Graph of (''x'' + 3)(''x'' − 1)<sup>2</sup>, used to illustrate w:en:Brent's method. Created by ~~~ in Matlab. |
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