Exercise 3 gradient check wrong message

In this exercise I made a mistake (which I understand and will correct) but I received a message telling me I had everything perfect.
I think your test coding is missing an abs(…) as it appears to assume that anything negative is correct - when it is clearly not!
Could you check this out and ask your coders to correct please.


A bug is already filed about this, but thank you for the report!

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