Code for Pre-Coded functions

In Course 2 of DLS i noticed that quite a few of the functions in the programming assignment were precoded and i’m not able to find the source code for it. For example the decision boundary code and the 3 layer model code look really interesting in assignment 1. Please point me to where to find these.

There is a topic about that on the DLS FAQ Thread. The short answer is just click “File → Open” and have a look around. You can tell the name of the files to look for by reading the “import” cell which is the first code cell in each notebook.