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数的收缩和几何图形的收缩安徽师范大学附中袁金数的收缩变换和几何图形的收缩变换统称为收缩变换.本文试图探索如何用收缩变换巧妙解答某些竞赛题.1.数的收缩所谓数的收缩,就是构造出一组数a1>a2>…>an满足题设条件,从而简化有关的式子,(在反证法证明中...
The shrinkage of numbers and the shrinkage of geometric shapes The contraction transformation of Yuan Jin number in Anhui Normal University and the shrinkage transformation of geometric figures are collectively referred to as contraction transformation. This article attempts to explore how to use contraction transformation to solve some contest problems ingeniously. 1. The contraction of the number of the so-called number of contraction is to construct a set of numbers a1>a2>...>an to satisfy the question setting conditions, thereby simplifying the relevant expressions, (in the proof of counterfeit law...