Hello, any help please? For ex 2 I compute the gradient correctly but when I compute and display the gradient with w initialized to zeroes I do not get the expected output.
Similar pb with cost and gradient with non-zero w and, my w and b found by gradient descent are not the expected ones. However my implementation in ex 1 is correct.
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Your code doesn’t have the correct indentation. There is a block that is outside the for-loop of the examples - so your dj_dw_i and dj_db_i are getting overwritten and are unused on each iteration.