newton-cotes

代码说明：

说明：  Newton-cotes是用来估算积分值的公式，因简洁性和在低阶时精确的精确度，而被广泛使用，是最最简单的数值计算。这个程序仅有n=5以内的计算，虽然没什么难度，但是可以锻炼编程思维。(Being capable to calculate the integral, Newton-cotes is widely used among the world on account of its simple formulation and accuracy .Simple as it is ,this short program is benificial to those students who first learn how to generate the program and get to understand how computer works comparing to human beings.)