Now we will see how to calculate the gradients of loss with respect to the input to the hidden weights, 
, for all the gates and the content state. Computing gradients with respect to is exactly the same as for those we computed with respect to 
, except that the last term will be 
instead of 
, similar to what we learned when we covered the LSTM cell.
We can write the gradients of loss with respect to 
as:
The gradients of loss with respect to 
are represented as follows:
The gradients of loss with respect to 
are represented as follows:
