本源代码解决了可以实时对误差进行显示的增加动量项的BP神经网络对非线性函数的逼近。有一定的收敛效果，目前参数已经调好，只需反复运行即可。-The origin code to solve the momentum BP neural network can display real-time error on the approximation of nonlinear function. Convergence, the parameters have been fine, just can be run repeatedly.