Question: 3. Classification. a. What is the reason we use a ligistic/sigmoid function ( g( z) ) in logistic regression. b. Show that g ' (

3. Classification. a. What is the reason we use a ligistic/sigmoid function ( g( z) ) in logistic regression. b. Show that g ' ( z)=g( z)(1g( z)) c. Derive the update rule for gradient descent for logistic regression.

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