MATSEC AM Pure Mathematics Complete Prep Course — Lesson 72: Rates of change

Sarah links related rates through the chain rule, showing how a known time rate converts into an unknown one by multiplying by the connecting derivative. She drills the setup ritual, the minus sign on leaking and shrinking quantities, the sphere result four pi r squared times d r by d t, substituting only after differentiating, chaining d V by d h with d h by d t, and stating units.

Lesson 72 of 158 in the MATSEC AM Pure Mathematics Complete Prep Course audio course from ExamPrepRise.

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