Unformatted text preview: f ( x ) = √ 4 x 4 + 1 x 22 x3 . 7. The speed of traﬃc ﬂow on a certain stretch of Route US 70 between 6 am to 10 am on a typical weekday is approximated by the function f ( t ) = 2 t4 √ t + 72 (0 ≤ t ≤ 4) where f ( t ) is measured in miles per hour and t is measured in hours, with t = 0 corresponding to 6 am. Find the largest speed and smallest speed during this time period. 8. An open box is to have a square base and a volume of 10 cubic feet. If the material for the base costs 5 dollars per square feet, and the material for the four sides costs 2 dollars per square feet. Determine the dimensions of the box with minimum cost. 1...
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This note was uploaded on 05/13/2008 for the course MATH 115 taught by Professor Bayer,margaret during the Spring '08 term at Kansas.
 Spring '08
 Bayer,Margaret
 Calculus, Derivative

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