Use this psuedo code ^^^^^^^ to do number 2 in matlab

18.2 LAGRANGE INTERPOLATING POLYNOMIALS 505 UNCTION Lagmg(x, y. n. xx,) OFOR 0, producty D0FOR j = 0, n IFi +J THEN roduct - product*(xx x)(x,-x) ENDIF END DO msum+product END DO Lagmig SLT END Lagrng FIGURE 18.11 Pseudocode to implement Lagrange interpolation. This algorithm is set up to compule a single nthorder prediction, where n is the number of data points