概率统计是新课程中的热点内容,以概率统 计的观点来研究和处理其它数学分支的问题别 有一番情趣.本文讲解如何构造概率统计模型解 传统赛题,希望对读者有所启示. 1.求最值 例1 已知x,y,z∈R+,且x+y+x=1. 则的最大值为 . (第11届00年高二“希望杯”) 解 构造离散型随机变量ξ, 设其分布列为 Probability and statistics are the hot topics in the new curriculum. It is interesting to study and deal with other mathematics branches from the point of view of probability statistics. This article explains how to construct probabilistic and statistical models to solve traditional topics and hopes to inspire readers. Value Example 1 is known as x,y,z∈R+, and x+y+x=1. Then the maximum value is. (The eleventh year of the year 2000 high 2 “hope cup”) solution of discrete random variables ξ, Set its distribution as