geometria analitica de lehmann - MATEMATICAS EJERCICIOS ...

472 GEOMETRIA ANALITICA PLANA
Grupo 13, p. 94
5. 2x - y + 8 = 0. 6. 12x - 21 y — 28 = 0.
7. 3x —4y + 12 = 0.
8. 5x~ 12 y + 65 = 0, 5x — 12 y - 65 -■ 0.
9. 2x + 3y + 12 = 0, 2x + 3y -- 12 « 0.
10. 5* - y - 13 = 0. 11. 9x + 7y - 11 = 0.
12. 2* — í/ + 6 — 0, 5* — 2y + 10 = 0.
13. 4jc + 3t/ — 12 == 0, x + 2y -f 2 = 0.
14. 3x — y — 3 \ / 2 = 0, 3x — y + 3 \ / 2 = 0.
15. 7x + \2y - 42 * 0, 7* + 3y + 21 =■ 0.
16. 4* + 3t/ — 12 = 0, 8.x: + 15y - 36 =■ 0.
17. ■y/ 5x 2y — 9 — 0, y + 3 == 0.
18. 2* + 3y - 12 = 0, 3x + 2y -- 12 = 0.
19. x — Ay = 0. 21. 3x - y + 5 - 0.
20. 4* + 5t/ - 7 = 0. 22. 8* - 3y + 5 = 0.
23. 5x - \2y + 26 = 0, x = 2.
24. x — 4y + 8 * 0, 9x - 4y —24 = 0.
25. 3x — y — 18 = 0, x — 2y — 1 = 0.
Grupo 14, p. 96
3. 41* - 5y - 89 = 0. 16. 18*.
12. 2. 18. ki = ± 4, kz = =*= 14.
15. (7, 4 ).
1.
2.
(x + 3)2 + ({/ + 5)2 . 49.
(jc + l ) 2 + (y - 4)2 - 10.
Grupo 15, :p. 102
3. ( * - 7 ) 2 + (y + 6 ) 2 « 8 9 . 17. (* - 7 ) 2 + J,* = 45.
4.
5.
6.
8.
9.
10.
( x - 2) 2 + ( y + 4) 2 = 4.
x 2 + (t/ + 2)2 = 4 .
(x + 4 ) 2 + (y + 1)* — 52.
(x “ 6) 2 + (y + 3) 2 = 25.
( x - 4) 2 + (y - 2 ) 2 = 58.
7,07.
15.
18.
/ , 11\2 325
* 2 + ( y + T ) = - .
19. ( , - 2 ) . + («, + * ) * - f .
20.
/ 1 \2 . / 65\2 6205
( * 22/ \ 22/ 242 ‘
12. (x + 1)2 + y> - 2 * 21. x — 2y + 10 = 0.
13. < , - 2 > . + ( „ + ' ) ’ - | £ .
22.
23.
x + 2y - 20 = 0.
jc + 2y — 9 = 0, x — 2y 3 =
14. ( * - 2 ) 2 + ( y - l ) 2 - l . 24. (x — 5) 2 + (y + 3) 2 = 8.
25. ( * - 5 ) » + (y + 2)* = 1. (* - 3 ) 2 + (y + 1 ) 2 = ^ I .