建立一个含单隐层的双输入单输出网络，实现异或问题： x1(1)=0 x2(1)=1 d(1)=1 x1(2)=1 x2(2)=0 d(2)=1 x1(3)=1 x2(3)=1 d(3)=0 x1(4)=0 x2(4)=0 d(4)=0 训练出相应的网络权值矩阵W-Establish a dual-input single-output network with a single hidden layer,solve the XOR problem: x1 (1) =