**Please provide all the matlab codes.

1. Starting with the singular stress components in mode-I and mode-II plot the principal stresses 01 and 02 in each mode as functions of 0. You may use Maple or Matlab. Remember that the principal stresses are given by - 022 ) 01 + 022 01,2 = ) +07 Let K = 20 MPa Vm, K11 = 10 MPa Vm and r = 0.01 m. 2. Now plot the maximum in-plane shear stress in mode-I and mode-II Tmax as functions of 0. 1. Starting with the singular stress components in mode-I and mode-II plot the principal stresses 01 and 02 in each mode as functions of 0. You may use Maple or Matlab. Remember that the principal stresses are given by - 022 ) 01 + 022 01,2 = ) +07 Let K = 20 MPa Vm, K11 = 10 MPa Vm and r = 0.01 m. 2. Now plot the maximum in-plane shear stress in mode-I and mode-II Tmax as functions of 0