For the frame shown in Figure P18.7, write thestiffness matrix in terms of the three degre...

For the frame shown in Figure P18.7, write thestiffness matrix in terms of the three degrees of freedom indicated.Use both the method of introducing unit displacements and the member stiffness matrix of equation 18.36, Given:

E = 30,000 Kips/in2;I = 500 in4, and A = 15 in2.