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Wow, I love this problem, thank you for the lecture! But why no notebook? I was really hoping for it. Downloading whole notebook is great versus tedious copying of each code cell. And I imagine for you it is a loss of time to put it from notebook to text and images. And visually in notebook it is much prettier.
Cool post!
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Thank. you for your comment. I have uploaded the notebook. I hope you will enjoy it
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Perfect! Thank you so much for doing this. I can even rotate the 3D plot now 
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