Consider 1-D steady heat conduction in a composite plane wall (shown below) consisting of two layers A and B in perfect contact at the interface. The wall involves no heat generation.The nodal network of the wall consists of nodes 0 (at the left face), 1 (at the interface), and 2(at the right face) with a uniform nodal spacing of Ax. Using the energy balance approach,obtain the finite difference formulation of this problem for the case of insulation at the left boundary (node 0) and radiation at the right boundary (node 2) with an emissivity of & and surrounding temperature of Tsurr.