3. Solve the heat transfer-equation on [a, b] by using finite-differences method. a d²Ø dx² +q = 0; 0(a) = 100; 0(b) = 500; Ax = 0.004; L = 0.02; a = 0.5; q = 106 Write a computer program to solve the above BVP. Examine the effect of Ax, q on the results. Consider 3 different values for these parameters and present your results graphically.