On the basis of random numbers, The structure-formula of the normal random variable has been designed according to the limit theorem.
根据中心极限定理,以随机数为基础,设计了正态随机变量的结构公式,其数学期望和方差可任意给定。
2
This paper has given a pithy analytic Proof of "principal diameter circle"Theorem. And on the basis of the thought of the theorem. We obtain two theorem about ellipse normal.