1972 AP Calculus AB Exam FRQ #5 (Related Rates)

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Free Response Question #5 from the 1972 AP Calculus AB Exam.

This problem involved related rates! First you had just find the first and second derivative of a function. Unbelievably straight forward question, honestly. In part (b) we actually use related rates. I show two different ways you can solve this problem: one with related rates, one with a strict application of the chain rule.

Solving old Free Response Questions (FRQs) is the best way to prepare for the AP Calculus exam! Even the really old problems still have a lot of value!
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Thank you so much! Our test is tomorrow this related rate unit we did was all online in December, so I do not remember much.

Eric-hxrk