title: How does back propagation work for for multiple hidden networks?
body: <p>I have implemented the required equations for backpropagation for the output layer but for the hidden layers, I am getting really confused with the chain rule. When the number of hidden layers is. more, it gets more confusing.</p>
  
  <p>How to ease out hidden layer equations?</p>
  
  <p>PS. I know calculus</p>