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| View Original: | Stability region for AB2 method.png (1036x815) | |||
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| Keywords: Stability region for AB2 method.png Stability region of the second-order Adams-Bashforth method self-made using Matlab see source below 22 56 7 June 2007 UTC Jitse Niesen Matlab code <pre><nowiki> clf; X Y meshgrid linspace -3 2 linspace -2 2 ; Z X+Y 1i; phi1 1/2 1 + 3/2 Z + sqrt 1+Z+9/4 Z 2 ; phi2 1/2 1 + 3/2 Z - sqrt 1+Z+9/4 Z 2 ; contourf X Y 1-max abs phi1 abs phi2 0 0 'LineWidth' 1 ; set gca 'FontSize' 20 'CLim' 0 1 ; colormap 1 5 8; 0 0 0 ; hold on; plot -3 2 0 0 '--k' 'LineWidth' 1 ; plot 0 0 -2 2 '--k' 'LineWidth' 1 ; print -dpng 'ab2_lsd_tmp png'; system 'convert -trim -bordercolor white -border 10 +repage ab2_lsd_tmp png ab2_lsd png' ; </nowiki></pre> Stability region for AB2 method svg Stability regions | ||||
