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# You can use derivatives to find related rates of moving objects. Figure 6-8d shows

ISBN: 9781559536547 285

## Solution for problem 27 Chapter 6-8

Calculus: Concepts and Applications | 2nd Edition

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Problem 27

You can use derivatives to find related rates of moving objects. Figure 6-8d shows Calvin moving along Broadway in his car. He approaches its intersection with East Castano at 30 ft/s, and Phoebe, moving along East Castano, pulls away from the intersection at 40 ft/s. When Calvin is 200 ft from the intersection and Phoebe is 100 ft from the intersection, what is the instantaneous rate of change of z, the distance between Calvin and Phoebe? Is the distance z increasing or decreasing? Figure 6-8d

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L4 4.4 Professor OH M 15-16, W 12-13 Finish operator overloading and start class inheritance Postfix vs. Prefix Fraction& operator++() prefix Increments before all Fraction& operator++(int unused) postfix Stores old value, increments, returns old value Class Inheritance...

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