9. The partial differential equation of the temperature in a long thin rod is given by aT a2T at node 0 T-80 C T-20 °C 9em The initial temperature of the rod is u(x,0) = 30°C, and the rod is divided into 3 equal ments. Find the temperature at node 1 and 2 using (Ax = 3cm and At = 0.1s ) by using explicit hod.

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