说明：  利用线性神经网络对某一正弦信号进行线性预测。利用函数newlind设计线性神经网络， 在已知正弦信号过去5个值得情况下，预测其将来值。 定义需要的信号，共持续5s，采样频率40Hz
(Using linear neural network to a sinusoidal signal for linear prediction. Newlind design using a linear function of neural networks, known sinusoidal signal in the past five worthy cases, forecast its future value. The definition of the needs of the signal, sustained a total of 5s, the sampling frequency of 40Hz)