Chapter 20 of 46
Related Rates
The ladder slides, the shadow stretches: when quantities are linked by geometry, their rates are linked by the chain rule.
Free12–16 min
By the end
Each chapter closes with capabilities, not topics. Watch for these.
01Set up an equation relating changing quantities and differentiate with respect to time
02Solve related-rates problems and defend the setup
03Check answers against units and intuition