几种验证代理模型精度时常用的多项式函数。程序可在matlab中绘制相应函数图形，计算对应点处函数值，后续在代理模型中可以验证代理模型精度。(Several verification surrogated models accuracy is commonly used when polynomial functions are used. The program can draw the corresponding function graph in MATLAB, calculate the function value at the corresponding point, and then verify the accuracy of the agent model in the proxy model.)