This approximation grows more and more nearly precise as the real difference grows less; in complex language, the guidelines of point of view account with the dissimilarities to the 1st order of tiny quantities, together with other regulations are only needed to account for 2nd-buy distinctions. see also controversy, https://buycasesolution62883.get-blogging.com/36276879/the-basic-principles-of-hbr-case-study-analysis