(Solved):
Determine the local stiffness matrix for all the members \( \mathrm{K} 1, \mathrm{~K} 2, \ ...
Determine the local stiffness matrix for all the members \( \mathrm{K} 1, \mathrm{~K} 2, \mathrm{~K} 3 \) and write the final matrix force displacement equation after writing global stiffness matrix.