Show that the equation you should be solving for the new temperature at each node is (i is the node number, telling you where you are in the bed): + = 2 (+1 1) You will apply a central difference approximation for the space derivative as shown in the book (bottom of page 390), and a forward difference approximation for the time derivative. The + on the T in the equation indicates that is the temperature at the new time at node i. As described in the undergraduate heat transfer book, this is an explicit solution technique since everything on the right hand side is known. It is old information from the previous time step