复化三点Gauss-lengend公式求pi，是机器学习的例程，包括随机梯度算法，相对梯度算法，线性调频脉冲压缩的Matlab程序,重要参数的提取，构成不同频率的调制信号。- Complex of three-point Gauss-lengend the Formula pi, Machine learning routines, Including stochastic gradient algorithm, the relative gradient algorithm, LFM puls