三个输出的神经元网络拟合如下函数（前面上传的文件搞错了）。 y1=x1ln(x2) + x2ln(x3)；y2=x3ln(x4) + x4ln(x5)；y3=x5ln(x6) + x6ln(x1) -three output neural network function fitting as follows (in front of uploaded files wrong). Y1 = x1ln (x2) x2ln (x3); X3ln y2 = (x4) x4ln (x5); X5ln