Add an `1-penalty term in addition to the `2-penalty term in the code from Section 8.6. You will need to first work out analytically how the updates should be performed. Change the implementation of...

Add an `1-penalty term in addition to the `2-penalty term in the code from Section 8.6. You will need to first work out analytically how the updates should be performed.

Change the implementation of backpropagation from Section 8.4 to include a mini-batch of size 16. You can assume that the data size is a multiple of 16.