I have a tempral data series, which I need to integrate. In order to understand how Matlab does that, I start with a parabola as the data series. Could you guys please explain me why I get completely different results using the integral and cumtrapz funtions? The cumtrapz is giving me a cubic function, but I have no idea why it is only positive and I also do not understand the limits. My understanding is that the answer should be simple: intfx = x^3/3…
x = [-10:0.01:10]’;
fx = x.^2;
% intfx = integral(@(x) fx, x(1), x(end), ‘ArrayValued’, true);
intfx = cumtrapz(fx,x);
plot(x,fx,’b’)
hold on
plot(x,intfx,’r’)I have a tempral data series, which I need to integrate. In order to understand how Matlab does that, I start with a parabola as the data series. Could you guys please explain me why I get completely different results using the integral and cumtrapz funtions? The cumtrapz is giving me a cubic function, but I have no idea why it is only positive and I also do not understand the limits. My understanding is that the answer should be simple: intfx = x^3/3…
x = [-10:0.01:10]’;
fx = x.^2;
% intfx = integral(@(x) fx, x(1), x(end), ‘ArrayValued’, true);
intfx = cumtrapz(fx,x);
plot(x,fx,’b’)
hold on
plot(x,intfx,’r’) I have a tempral data series, which I need to integrate. In order to understand how Matlab does that, I start with a parabola as the data series. Could you guys please explain me why I get completely different results using the integral and cumtrapz funtions? The cumtrapz is giving me a cubic function, but I have no idea why it is only positive and I also do not understand the limits. My understanding is that the answer should be simple: intfx = x^3/3…
x = [-10:0.01:10]’;
fx = x.^2;
% intfx = integral(@(x) fx, x(1), x(end), ‘ArrayValued’, true);
intfx = cumtrapz(fx,x);
plot(x,fx,’b’)
hold on
plot(x,intfx,’r’) integral, cumtrapz MATLAB Answers — New Questions

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