13.17. , :
) M ( 2, 3, 1) Oxy; ) M Oy.
13.18. , :
) A (5, 4, 6) Ox;
) A .
13.19. :
) Oz M 1(3, 1, 2) M 2( 1, 2, 5);
) M 1 .
13.20. , 20 x 5 y + 4 z 210 = 0.
13.21. , , M (2, 4, 4) , .
13.22. , M (1, 0, 3) x + y + z 8 = 0 2 x y + 4 z + 5 = 0.
13.23. , M (2, 1, 1) 2 x 3 z = 0.
13
13.1. 2 x y + z 2 = 0, 1/ . 13.2. x + y 3 = 0. 13.3. x 2 y + z = 0.
13.4. x + 2 y + 3 z 3 = 0. 13.5. x + y 3 = 0. 13.6. cosj = 1/2 .
13.7. , r = 3/2 . 13.8. 8. 13.9. x y = 0, 1/ .
13.10 x + 2 y 2 = 0. 13.11. x + y + 2 z 5 = 0. 13.12. 2 x 2 y z + 1 = 0.
13.13. 2 x y 1 = 0. 13.14. cosj = 1/2. 13.15. .
13.16. 37,5. 3.17. ) z 1 = 0; ) x + 2 z = 0.
13.18. ) x 5 = 0; ) x + y + z 7 = 0.
13.19. ) 3 x + 4 y 5 = 0; ) 4 x + 3 y + 3 z + 9 = 0. 13.20. 10.
13.21. x 2 y + 2 z 18 = 0. 13.22. 5 x 2 y 3 z + 4 = 0. 13.23. 3 x 4 y + 2 z = 0.
14.
: , ; , ; ; ; ; ; ; ; .
1. | 14.1 - 14.3 | 14.5, 14.6 | |
2. | 14.4 | 14.7 | 14.8 - 14.13 |
14.1. L | L: |
.
14.2. ,
M o(2, 0, 3) :
a) q = (2, 3, 5); ) ; ) x; ) z;
) ; ) x = 2+ t, y = 2 t, z = 1 t.
14.3. ,
A (1, 2, 1) B (3, 1, 1).
14.4. L: M (0, 1, 2) Ï L (!).
:
) , L M;
) , M L.