摘要
应用正交多项式理论，对于连续型随机变量的概率密度，给出了广义Ｆｏｕｒｉｅｒ级数展开式的概念及其求法。
Using the orthogonal polynomial theory.The author give the concept and solving process of expansion in generalized Fourier series for the probability density of continuous random variable. A practical example of Weibull distribution of the average wind speed in Hangzhou is also given.
关键词
概率密度
正交多项式
矩
风速
probability density
orthogonal polynomial
moment
generalized Fourier series
wind speed
