# A9 - Math 127 ASSIGNMENT 9 Fall 2010 Due at 8:25 am on...

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Math 127 ASSIGNMENT 9 Fall 2010 Due at 8:25 am on Wednesday, December 1 st in the correct drop slot across from MC4066 or in class depending on your instructor’s preference. Assignments put into the wrong drop slot will not be marked. Part A (answer only): Submit your answers (not full solutions) using the template provided on the last page of this assignment, which you can print or hand-copy. Evaluate the following. For questions 1 and 2, use geometrical reasoning (no calculation is required). 1. Z 1 - 2 | x + 1 | dx 2. Z 2 0 2 x - x 2 dx 3. Z (5 - 2 x ) 5 dx 4. Z (2 t + 1) 2 t 3 dt 5. Z 1 0 (3 x + 2 - x ) dx Part B (full solution): All solutions must be clearly stated and fully justified . Most questions will be marked. 1. From the text, do 4.9 # 66. 2. A particle moves along the x -axis from x = 0 to x = 10, and is subject to a force field given by F ( x ) = 2 + cos π 5 x . The work done by the field is thus W = R 10 0 F ( x ) dx . a) Approximate W using the left and right Riemann sums with 4 subdivisions, i.e.

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