Week 4 quiz:

If L if the number of a neural network then dZ^{[L]} = A^{[L]} - Y. True or False?

My answer is False while the correct answer is True. I think the equation holds true only when the activation function is sigmoid. Am I wrong?

Week 4 quiz:

If L if the number of a neural network then dZ^{[L]} = A^{[L]} - Y. True or False?

My answer is False while the correct answer is True. I think the equation holds true only when the activation function is sigmoid. Am I wrong?

You’re right that it might not work out that way if `sigmoid`

is not the activation function, but everything we’ve seen so far uses `sigmoid`

, right? You’re thinking too far ahead. It is true for our purposes here based on everything we know so far.