simpsonQuadrature

Computes the integral of a function using Simpson quadrature

% x = simpsonQuadrature(fun,tLow,tUpp,n)
%
% This function uses simpson quadrature over each of n uniform segments to
% approximate the integral of fun(t) on the interval tLow <= t <= tUpp
%
% INPUTS:
% fun = function handle
% f = fun(t)
% t = [1, nt] = time query points on [a,b]
% f = [nx, nt] = vector function at query points
% tLow = scalar lower bound on time
% tUpp = scalar upper bound on time
% n = number of segments to divide interval into
%
% OUTPUTS:
% x = [nx, 1] = integral along each dimension
%