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# 1 x4 y x 4x x run 2 mi finish 64 4 16 x 66 1 x 2 y x2

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Unformatted text preview: d using calculus. It can be used to find the minimum amount of time required for the triathlete to reach the finish line. Simplify the expression. 8x 342 2 2x 1 1 12 9 313x x 2x 3x 2x Page A76 Review of Fundamental Concepts of Algebra x 56. 58. 34 11 54. 2x 55. 2:22 PM x 3n y 2n 2 68. x n xn yn 2 70. 2n x 2n x 3n x 3n x 2 x 2n n 2x 2n 2 x 5n x 3n x2 71. Think About It You are taking a course in calculus, and for one of the homework problems you obtain the following answer. 1 2x 10 1 1 2x 6 52 1 32 The answer in the back of the book is 2x 1 3 2 3x 1 . Show how the second answer can be obtained from the first. Then use the same technique to simplify each of the following expressions. (a) Find the times required for the triathlete to finish when she swims to the points x 0.5, x 1.0, . . . , x 3.5, and x 4.0 miles down the coast. 1 15 (b) Use your results from part (a) to determine the distance down the coast that will yield the minimum amount of time required for the triathlete to reach the finish line. (a) 2 x 2x 3 (b) 2 x4 3 3 x 32 32 2 2x 15 2 4 15 3 x 52 52...
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## This note was uploaded on 01/16/2014 for the course MATH 135 taught by Professor Noone during the Summer '08 term at Rutgers.

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