www.gusucode.com > symbolic 源码程序 matlab案例代码 > symbolic/PlotTheAccuracyOfThePadApproximantExample.m
%% Plot Accuracy of Pade Approximant % Plot the difference between |exp(x)| and its Pade approximants of % orders |[1 1]| through |[4 4]|. Use |axis| to focus on the region of interest. The % plot shows that accuracy increases with increasing order of the Pade % approximant. syms x expr = exp(x); hold on grid on for i = 1:4 fplot(expr - pade(expr,'Order',i)) end axis([-4 4 -4 4]) legend('Order [1,1]','Order [2,2]','Order [3,3]','Order [4,4]',... 'Location','Best') title('Difference Between exp(x) and its Pade Approximant') ylabel('Error')