Hello, I have a pb with last exercise. My code followed all instructions. Is there a bug ?
I don’t understand 
The answer your code produced is one of the two possible correct answers. Yours is the one you get before you fix the “fake” bugs that they added to the back propagation code.
If you fix the “fake” bugs, then you should get the other answer (the one that is 1.189*10^{-7}).
So why do you believe there is a problem? Did the grader not give you full points?
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I was not sure I could submit something bugged 
thanks for your answer