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Multivariable chain rule under a change of variables
Tutor me on https://mlprep.iwase.dev/item/mit-18-02sc-f2010-exam2-q4/. This is a practice item. If window.mlPrepAgent is available, read attempts for item mit-18-02sc-f2010-exam2-q4 before tutoring. Inspect my attempt, keep the item ID, and do not reveal the full answer first. After a real attempt, append its record with recorded_by agent, include agent_session_id when available, and read it back.Tests symbolic chain-rule bookkeeping that directly supports backpropagation and reparameterization.
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