How to integrate using the for loop?

I have a cosine wave function. how can I integarte that using the for loop. The cosine wave is an array of 1x40019. How can i integarte that one?

Answer 1

[Star Strider]

No loop necessary —

LD = load(websave('V1','https://www.mathworks.com/matlabcentral/answers/uploaded_files/1172553/V1.mat'));
V1 = LD.V1;
x = 0:numel(V1)-1;
V1int = cumtrapz(x,V1);

figure
yyaxis left
plot(x,V1)
ylabel('V_1')
yyaxis right
plot(x,V1int)
ylabel('V_1 Integrated')

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