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MediumRelated rates
Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §4.2 Implicit Differentiation and Related Rates, #21 · Calculus · Related rates

(Calculus classic) The bottom of a 10-foot ladder is going away from…

This problem is applications of related rates.

(Calculus classic) The bottom of a 10-foot ladder is going away from the wall at feet per second. How fast is the top going down the wall? Draw the right triangle to find when the height is (a) 6 feet (b) 5 feet (c) zero.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §4.2 Implicit Differentiation and Related Rates, #21

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