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MA 221 Even Answers, Part 3 Lesson 26, Section 3.6, p. 131 2. dy = parenleftbigg 2 x + 1 x 2 parenrightbigg dx 6. Δ y = - 0 . 0135, dy = - 0 . 0148 8. Approximate error: 0 . 40 in 2 , Percent error: 1 . 6% 16. 0 . Lesson 27, Section 4.1, p. 135 2. x 2 + C 6. 2 5 x 5 - 2 x 3 + 1 2 x 2 + 5 x + C 8. 1 2 x 2 - 7 5 x 5 + C 12. - 2 x + C Lesson 28, Sections 4.2 and 4.3, p. 143 2. 15 2 4. 26 3 6. 1 6 8. 1 1

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2 Lesson 29, Sections 4.4 and 4.5, p. 149 2. 2 5 x 5 / 2 - 1 2 x 2 + C 4. 3 x 1 / 3 + 2 x 3 / 2 + C 12. - 1 9 (4 - x 3 ) 3 + C 14. 1 16 ( x 4 + 1) 4 + C 20. - 1 3 (1 - 2 t ) 3 / 2 + C 22. 3 8 ( t 2 + 1) 4 / 3 + C 24. 2 radicalbig x 2 + x + C 28. x - 2 3 x 3 + 1 5 x 5 + C 30. 2 x + x + C Lesson 30, Section 4.5, p. 149 54. 2 56. 28 3 60. 10 3 62. 2 64. 1 3 66. 136 3 68. 16 2 3
3 Lesson 31, Section 4.6, p. 155 10. answer: 1 3 - 1 1 dx 20. answer:

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