In this paper we obtain several theorem of the definite integral of triangle composite function.
本文给出了计算三角复合函数的定积分的若干方法。
The method of the definite integral by substitution is one of the main techniques among the definite integral calculation.
定积分换元法是定积分计算的主要方法之一。
The definite integral can be calculated with the integration function in MATLAB or can be solved by using the Monte Carlo programming method.
该定积分可用MATLAB提供的积分函数计算，或者利用蒙特卡罗方法通过编程求解。
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