16.8. , , C, : 4 x 2 + 3 y 2 8 x + 12 y 32 = 0.
16.9. , , , , :
9 x 2 16 y 2 + 90 x + 32 y 367 = 0.
16.10. , , p:
) x 2 = 2 y; ) x = 2 y 2 12 y + 14.
16.11. , : | ) ; | ) . |
:
16.12. 5 x 2 + 12 xy 22 x 12 y 19 = 0.
16.13. x 2 4 xy + 4 y 2 4 x 3 y 7 = 0.
16.14. 5 x 2 6 xy + 5 y 2 32 = 0.
16
:
16.15. 16 x 2 + 25 y 2 + 32 x 100 y 284 = 0.
16.16. 16 x 2 9 y 2 64 x 18 y +199 = 0.
16.17. y = 4 x 2 8 x + 7.
16
16.1. C (3, 1), a = 3, b = , e = 2/3.
16.2. C (2, 3), a = 3, b = 4, e = 5/3, 4 x 3 y 17 = 0, 4 x + 3 y + 1 = 0.
16.3. a) (2, 0), p = 2; ) (6, 1), p = 3.
16.5. . 16.6. y² 2 = 4 x².
16.7. .
16.8. C (1, 2), a = 4, b = 2 , e = 1/2.
16.9. C ( 5, 1), a = 8, b = 6, e = 5/4, 3 x + 4 y + 11 = 0, 3 x 4 y + 19 = 0.
16.10. ) (0, 2), p = 1/2; ) ( 4, 3), p = 1/4.
16.12. , O² (1;1), e 1= , e 2 = .
16.13. y² ¢2 = x², O² (3; 2), e 1 = , e 2 = .
16.14. , e 1 = , e 2 = .
16.15. , a = 5, b = 4. 16.16. , a = 4, b = 3.
16.17. , p = 1/8.
17.
: : , , ; ; ; ; ; ; .
1. | 17.1 - 17.8 | 17.11 - 17.14 | 17.17 - 17.21 |
2. | 17.9, 17.10 | 17.15, 17.16 |
:
17.1. x 2 + y 2 - 9 = 0. 17.2. x 2+ y 2 - 2 x - 4 y - 4 = 0. 17.3. x 2 - 2 y + 1 = 0.
17.4. z = x 2. 17.5. x 2 = y 2 + z 2. 17.6. x 2 = y 2 - z 2. 17.7. x = y 2/4 + z 2/9.
17.8. (x -1)2 + (y -3)2+ (z -1)2 = 4.
, :
17.9. z = x 2+ y 2, z = 0, y = 1, y = 2 x, y = 6 - x.
17.10. x = 0, y = 0, z = 0, 2 x + 3 y - 12 = 0, z = y 2/2.