Week 4 assignment part 1 Exercise 9 - L_model_backward

Course Q&A Deep Learning Specialization Neural Networks and Deep Learning
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why dA1 is not working.

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Hi,

That error indicates you have not defined dA1, I would suggest you to check the code where grads is created.

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@albertovilla
Hello, I 've got the same error without outputting dA0, and I 'm following the instructions in the code comments.