文献[1]对2012年高考数学广东卷的一道题进行了研究,给出各种解法,特别是转化为等比数列或运用多项式函数进行放缩,给人以启迪。如果我们把问题引向深人,即把方法3中的3/2缩小为7/5或4/3,甚至更小的数时,如果继续按照文献[1]中的方法,前面的部分项就不能放缩,要保留,但到底要保留几项,这 Literature [1] on the 2012 college mathematics in Guangdong volume of a question was studied, given a variety of solutions, especially into the geometric progression or the use of polynomial function scaling, giving enlightenment. If we direct the problem to the point where we narrow down 3/2 of Tier 3 to 7/5 or 4/3, or even smaller, if we proceed with the method in [1], the previous part Can not be deflated, to be retained, but in the end to retain a few, this