C1_W1_Assignment - Gradient Descent Error

Course Q&A Machine Learning Specialization Supervised ML: Regression and Classification
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I’m facing the above error at “Gradient Descent” portion. Can anyone guide how to rectify?

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Did you complete the code in the gradientDescent() function?

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Also, which course are you attending?
You posted in the Machine Learning Specialization Course 1 Week 1, but there is no programming assignment in that week of that course.

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Natural Language Processing with Classification and Vector Spaces

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Please re-post your message in the correct course.