For step size 0.040 Cumulative error for the series is 1.102045 Average error for the series is 0.021609 For step size 0.020 Cumulative error for the series is 1.077540 Average error for the series is 0.010669 For step size 0.010 Cumulative error for the series is 1.022829 Average error for the series is 0.005089 For step size 0.005 Cumulative error for the series is 0.910214 Average error for the series is 0.002270