Problem 10 - Olympiad

In back-propagation, what role does the chain rule play?

A. It initializes weights to small random valuesB. It computes the gradient of the loss with respect to each parameterC. It selects the optimizerD. It determines the activation function

Correct: B

The chain rule decomposes derivatives through nested functions, enabling efficient computation of ∂Loss/∂W for every weight in the network.