a$)$ set up the global element stiffness matrix for all members. Using the matrix given above.

b$)$ assemble the overall global stiffness matrix for the whole truss

c$)$ what is the value of the determinant of the overall global stiffness matrix obtained in b$)?($No need to calculate determinant$)$ what is the meaning of the value of the determinant and how will we use it in matrix structural analysis?

d$)$ calculate the horizontal and vertical displacement of node $1$

e$)$ calculate the axial force in member $3.($State if its compression or tension$)$

f$)$ what are the limitations of the method used. How do these limitations affect the accuracy of the results for this specific structure?