A two-dimensional rectangular plate is subjected to prescribed boundary conditions. Using the results of the exact solution for the heat equation presented in Section 4.2, calculate the temperature at the midpoint (1,0.5) by considering the first three nonzero terms of the infinite series that must be evaluated. Assess the error resulting from using only the first non-zero terms of the infinite series. Plot the temperature distributions T(x, 0.5) and T(1.0, y).