(a) Write a function m-file whose input is a number n and a matrix 3 n. The code in that m file then generates a cubic Hermite interpolant. The interpolation points are listed in the first first row of the input matrix, the corresponding function values are listed in the second row, and the requisite derivative values comprise the third row. The output of this file is the standard spline' output (i.e., the one that can be put into ppval.) The only library m-file you are entitled to use here is mkpp. (Hint: your code first finds the cubic Hermite interpolant, and then puts it into mkpp in order to get the 'standard spline' output.)