Form the structure stiffness matrix for the truss in Figure P15.3. Partition the matrix as...

Form the structure stiffness matrix for the truss in Figure P15.3. Partition the matrix as indicated by Equation 15.30. Compute all joint displacements and reactions using Equations 15.34 and 15.35. For all bars, A = 2 in.² and E = 30,000 kips/in.².

Figure P15.3:

Equation 15.30:

Equation 15.34:

Equation 15.35: