multivariable_18_Selected_Answers_2up

multivariable_18_Selected_Answers_2up - A Selected Answers...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: A Selected Answers 1.1.1. (2 / 3) x + (1 / 3) 1.1.2. y = 2 x 1.1.3. ( 2 / 3) x + (1 / 3) 1.1.4. y = 2 x + 2, 2, 1 1.1.5. y = x + 6, 6, 6 1.1.6. y = x/ 2 + 1 / 2, 1 / 2, 1 1.1.7. y = 3 / 2, y-intercept: 3 / 2, no x-intercept 1.1.8. y = ( 2 / 3) x 2, 2, 3 1.1.9. yes 1.1.10. y = 0, y = 2 x + 2, y = 2 x + 2 1.1.11. y = 75 t , 164 minutes 1.1.12. y = (9 / 5) x + 32, ( 40 , 40) 1.1.13. y = 0 . 15 x + 10 1.1.14. . 03 x + 1 . 2 1.1.15. (a) y = braceleftBigg x < 100 ( x/ 10) 10 100 x 1000 x 910 1000 < x 1.1.16. y = braceleftBigg . 15 x x 19450 . 28 x 2528 . 50 19450 < x 47050 . 33 x 4881 47050 < x 97620 1.1.17. (a) P = . 0001 x + 2 (b) x = 10000 P + 20000 1.1.18. (2 / 25) x (16 / 5) 1.2.1. (a) x 2 + y 2 = 9 (b) ( x 5) 2 + ( y 6) 2 = 9 (c) ( x + 5) 2 + ( y + 6) 2 = 9 1.2.2. (a) x = 2, y = 3, m = 3 / 2, y = (3 / 2) x 3, 13 (b) x = 1, y = 3, m = 3, y = 3 x + 2, 10 (c) x = 2, y = 2, m = 1, y = x , 8 1.2.6. ( x + 2 / 7) 2 + ( y 41 / 7) 2 = 1300 / 49 1.3.1. { x | x 3 / 2 } 1.3.2. { x | x negationslash = 1 } 1.3.3. { x | x negationslash = 1 and x negationslash = 1 } 1.3.4. { x | x < } 1.3.5. { x | x R } , i.e., all x 451 452 Appendix A Selected Answers 1.3.6. { x | x } 1.3.7. { x | h r x h + r } 1.3.8. { x | x 1 } 1.3.9. { x | 1 / 3 < x < 1 / 3 } 1.3.10. { x | x 0 and x negationslash = 1 } 1.3.11. { x | x 0 and x negationslash = 1 } 1.3.12. R 1.3.13. { x | x 3 } , { x | x } 1.3.14. A = x (500 2 x ), { x | x 250 } 1.3.15. V = r (50 r 2 ), { r | < r radicalbig 50 / } 1.3.16. A = 2 r 2 +2000 /r , { r | < r < } 2.1.1. 5, 2 . 47106145, 2 . 4067927, 2 . 400676, 2 . 4 2.1.2. 4 / 3, 24 / 7, 7 / 24, 3 / 4 2.1.3. . 107526881, . 11074197, . 1110741, 1 3(3 + x ) 1 9 2.1.4. 3 + 3 x + x 2 1 + x 3 2.1.5. 3 . 31, 3 . 003001, 3 . 0000, 3 + 3 x + x 2 3 2.1.6. m 2.2.1. 10, 25 / 2, 20, 15, 25, 35. 2.2.2. 5, 4 . 1, 4 . 01, 4 . 001, 4 + t 4 2.2.3. 10 . 29, 9 . 849, 9 . 8049, 9 . 8 4 . 9 t 9 . 8 2.3.1. 7 2.3.2. 5 2.3.3. 2.3.4. undefined 2.3.5. 1 / 6 2.3.6. 2.3.7. 3 2.3.8. 172 2.3.9. 2.3.10. 2 2.3.11. does not exist 2.3.12. 2 2.3.13. 3 a 2 2.3.14. 512 2.3.15. 4 2.3.16. 2.3.18. (a) 8, (b) 6, (c) dne, (d) 2, (e) 1, (f) 8, (g) 7, (h) 6, (i) 3, (j) 3 / 2, (k) 6, (l) 2 2.4.1. x/ radicalbig 169 x 2 2.4.2. 9 . 8 t 2.4.3. 2 x + 1 /x 2 2.4.4. 2 ax + b 2.4.5. 3 x 2 2.4.8. 2 / (2 x + 1) 3 / 2 2.4.9. 5 / ( t + 2) 2 2.4.10. y = 13 x + 17 2.4.11. 8 3.1.1. 100 x 99 3.1.2. 100 x 101 3.1.3. 5 x 6 3.1.4. x 1 3.1.5. (3 / 4) x 1 / 4 3.1.6. (9 / 7) x 16 / 7 3.2.1. 15 x 2 + 24 x 3.2.2. 20 x 4 + 6 x + 10 /x 3 3.2.3. 30 x + 25 3.2.4. 6 x 2 + 2 x 8 Appendix A Selected Answers...
View Full Document

Page1 / 13

multivariable_18_Selected_Answers_2up - A Selected Answers...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online