Product software implementation method result in ambiguity when questions arise in the execution of the implementation process. On the other hand methods can be used as a profession, meaning that the method should be taken strict and the usage of the method should be a profession, instead of a guiding principle. This view is very useful if the implementation process is very complex and is very dependent on exact and precise acting. Organizational and quality management will embrace this view, as a strict usage of any method results in more clarity on organizational level. Change management however might indicate that more flexibility in an
Midpoint method a similar manner. The key to deriving Euler's method is the approximate equality which is obtained from the slope formula and keeping in mind that formula_35 For the midpoint methods, one replaces (3) with the more accurate when instead of (2) we find One cannot use this equation to find formula_38 as one does not know formula_39 at formula_40. The solution is then to use a Taylor series expansion exactly as if using the Euler method to solve for formula_41: which, when plugged in (4), gives us and the explicit midpoint method (1e). The implicit method (1i) is obtained by