code: # -*- coding: utf-8 -*-
  """
  Created on Wed May 20 11:36:58 2020
  
  @author: nastavirs
  """
  import numpy as np
  import tensorflow as tf
  def net_u(self, x, t):  
          u = self.neural_net(tf.concat([x,t],1), self.weights, self.biases)
          return u
apis: tensorflow.concat