Simple algorithm for probability density of function in two random variable 关于二维随机变量函数的概率密度的一种简便算法
Calculating skill on the distribution of2 - dimensional continuous random variable functions 二维连续型随机变量函数的分布计算技巧
The distribution for function of variables is an important but difficult to be mastered course 摘要随机变量函数的分布是数学系概率统计课程教学中的一个重点和难点。
Though studying some formulas in theory of probability , we give the formula conditional probability in complete event set and a simplified formula for density ' s function in two random variables , they offer new methods in calculation 摘要通过对概率论中有关公式的研究,给出了全条件概率公式和二维随机变量函数的密度函数的简化计算公式,为其计算提供了新的方法。
The main idea of this method include two steps : at first , the approximate expression of function is obtained by method of weighted residuals ; then the first and second moment of the random function can be calculated with method of moment 该方法的基本思想是利用加权残值法获得问题解的近似函数表达式,在此基础上利用求解随机变量函数的矩法求得随机函数的一、二阶矩等统计数字特征。
随机: random stochastic; random变量函数: variable function单变量函数: one-variable function实变量函数: real variable function非随机变量: nonrandom variable; nonstochastic variable复随机变量: complex random variable随机变量: chance variable; extraneous variable; facultative variant; ramdom variable; random variables; randomvariable; stochastic variables; variate伪随机变量: pseudo-random variable状态变量函数: state variable function纯量随机变量: scalar random variable独立随机变量: independent random variable多维随机变量: multiple random variables多元随机变量: multiple random variable尔朗随机变量: erlang random variable二随机变量和: sum of two random variables非负随机变量: nonnegative random variable复合随机变量: compound random variable高斯随机变量: gaussian random variable混合随机变量: mixed random variable均匀随机变量: homogeneous random variable; uniform random variable离散随机变量: discrete random variable; random variable连续随机变量: continuous random variables; continuous variable; continuous variate; random variable模糊随机变量: fuzzy random variable平稳随机变量: stationary random variable矢量随机变量: vector random variable