正态分布的概率密度函数的一个应用
An Application of Probability Density Function of Normal Distribution
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摘要: 文章运用正态分布的概率密度函数的3σ法则来证明数学分析中的一个问题,并在一定程度上说明利用正态分布的概率密度函数证明此问题的必要性.Abstract: This paper introduces a method to prove a problem of mathematical analysis by 3σ-rule of probability density function of normal distribution and shows necessity of this method by the conclusion of theorem 2 in some degrees.