Week 1, Assignment 1, Ex3, No 'dense layer' implemented?

Course Q&A Deep Learning Specialization Sequence Models
1

Hi, in Figure 4 showing a single LTSM cell, it is mentioned that ‘softmax’ includes a dense layer.

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However, in Ex3, only a softmax function is implemented, as shown below in utils.py:
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I wonder what this dense layer is? Below is my interpretation: for a given time step , the predicted output is of dimensions (n_y, m), where softmax gives n_y probabilities for each of the m training examples. Not sure what a dense layer here would serve?
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Thanks for any clarification.

2

The dense layer serves to learn the Wy weight matrix and by, so that the predictions are useful.
Your markup seems correct.