3. Write a computer program that reads the engineering constants E1, E2, 112 and G12, computes, and prints the 3 x 3 plane stress matrices [S], [Q], [S] and [Q]y for any material. Run your program for the properties of AS/3501 graphite/epoxy and print out the matrices for the fiber orientations 0, 90, -45, and +45. Also use your program to plot Ex, Ey, Gxy, Vey, 1xs and ny for values of Oranging from 0 to 90.