Build the "global linear system (including the boundary conditions) for this simple thermal finite element problem shown in Fig. 4.1. Before you start, indicate the size of the global stiffness matrix and global load vector. Find the equations that you would use to solve for the unknown nodal temperatures (T3 T6) and the unknown nodal heat fluxes (q1 and q2). Note that the global stiffness matrix is not invertible so you must correctly apply boundary condition to obtain linear equations that can be solved directly. 5 3 3 1 y 6 q 1 4 Figure 4.1 2 4 2 2 2 X Assume K = K. = K yy Q constant T T-15 10