(a) Create a function spline moments in a file splinemoments.m that calculates the moments of the natural cubic spline that interpolates a set of data points. The parameter of the function is the number of data points, and two arrays that contain the x and y coordinates of the data points. The function returns an array with the spline moments. Use the Gaussion elimination algorithms presented in the lecture. Note that arrays in Matlab always start with index 1. (b) Test the function splinemoments with the data set i 0 1 2 xi 0 1 2 yi 0 2 0