Logistic Regression Gradient Descent

Course Q&A Deep Learning Specialization Improving Deep Neural Networks: Hyperparameter tun
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I’m confusing with the equation of dz = dL / dz
I’m not sure I truly understanding or not, but it seems confused with (make it more simple) a = b/a… Why?

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Hi, @panicpotatoe.

dz is just a shorthand for \frac{\partial{L}}{\partial{z}}. Easier to write and makes for a convenient variable name :slight_smile:

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thank you. That help me a lot

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