ABSTRACT
This process is illustrated in Figure 7.14. Subtract Eq. (7.200) from Eq. (7.199) and solve for A M"'+1, which is the local trucation error.
(7.201)
If IErrorl < (lower error limit), increase (double) the step size. If IErrorI > (upper error limit), decrease (halve) the step size. Care must be taken in the specification of the values of (lower error limit) and (upper error limit). This method of error estimation requires 200 percent more work. Consequently, it should be used only occasionally.
