If two points have unequal segments, the Trapezoidal rule would be applied. If 3 points have equal segments, Simpson's 1/3 rule would be applied. If 4 points have equal segments, Simpson's 3/8 rule would be applied. This method gives better estimates than using the Trapezoidal rule alone.
Robby Ching (2020). Trapezoidal with Simpson's rule-data (https://www.mathworks.com/matlabcentral/fileexchange/77663-trapezoidal-with-simpson-s-rule-data), MATLAB Central File Exchange. Retrieved .
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