Non-linear Extrapolation and Two-Point Boundary Value Problems It is suggested that the convergence properties of the usual Picard successive approximation scheme may be improved through use of non-linrar extrapolation techniques. A numerical example is provided. CACM August, 1965 Bellman, R. Kagiada, H. Kalba, R. CA650812 JB March 6, 1978 8:05 PM 1212 5 1212 1212 5 1212 1212 5 1212