Find the temperature distribution in a metal rod of length 1 m as shown in Figure i that is initially at 70 C. The steady-state temperature at the left and right ends of the rod are given by 50C and 20C, respectively. Use the implicit method with a = 0.1, Ax = 0.1, and; i) t- 0.02 ii) A t = 0.04 iii) At = 0.08 IV = 70C BV, = 20C BV; = 50C 1m