need full steps on matlab or excel

Element Element 1 2.C2 Rod AB is horizontal with both ends fixed; it consists of n elements, each of which is homogeneous and of uniform cross section, and is sub- jected to the loading shown. The length of element i is denoted by L, its cross-sectional area by A, its modulus of elasticity by E, and the load applied to its right end by P, the magnitude P of this load being assumed to be positive if P, is directed to the right and negative otherwise. (Note that Pi = 0.) (a) Write a computer program that can be used to determine the reactions at A and B, the average normal stress in each element, and the deformation of each element. (b) Use this program to solve Probs. 2.41 and 2.42. Fig. P2.02