Plotting iterations of summations using a for loop.

Question

James Crowe 2017-10-26

0
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https://ww2.mathworks.cn/matlabcentral/answers/363411-plotting-iterations-of-summations-using-a-for-loop

评论： James Crowe 2017-10-26

Hi all, how would I plot every iteration of the sum? It's and approximation of cos, getting closer each iteration. Thank you in advance!

 x = -pi:0.1:pi
sum = 0;
n=(1:1:5);
for k = 0:n
   kTerm = ((-1).^(k)).*((x.^(2.*k)))./(factorial(2.*k));
   sum = sum + kTerm;
end
sum
hold on; grid on
plot (x, sum, ':b')
plot (x, ye, '-r');

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Answer 1

Torsten 2017-10-26

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https://ww2.mathworks.cn/matlabcentral/answers/363411-plotting-iterations-of-summations-using-a-for-loop#answer_287893

编辑：Torsten 2017-10-26

在 MATLAB Online 中打开

 x = -pi:0.1:pi;
 n = 5;
 sum = 0;
 for k = 0:n
     kTerm = ((-1).^(k)).*((x.^(2.*k)))./(factorial(2.*k));
     sum = sum + kTerm;
     plot(x,sum)
     hold on
  end