. , , , , .
, N, P, Q - , F . 1, 2, 3 N, Q F. N, Q F , 1, 2, 3 .
(, ,,) , . (0,0,0), (1,0,0), (0,1,0), (0,0,1), (½, 0,0), (½,½,0),
N(0, ½,½), Q(0,0, ½), (0, ½,0), F(½,0, ½). 1, 2, 3. 1(¼, ¼, ¼), 2(¼, ¼, ¼), 3 (¼, ¼, ¼).
1, 2, 3 , , .. N, Q F . ■
6.69. . , ) ; ), , .
6.70. , .
6.71. . , .
6.72. , , , M, N,
P, Q λ. , MNPQ .
6.73. , , , 1, 1, 1, 1 , 1: 1 = 1: 1 = λ,
1: 1 = 1: 1 = μ. , 1111 , 11 μ, , 1 1 λ.
6.74. . , , , , .
6.75. , , , 3: 1, .
1111. , , 1, , 11. 1 1.
{ , , 1 }. 1, 1, 1 .
1 = 11/ 2 = / 2 1 (½,0,0).
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1 = 11 + 1 / 2 = 1 /2 1 (1, 0,- ½).
1 = 1 + + / 2 = /2 - - 1 1 (½, -1,-1)
.
V1 = | 1 |/ 6, V1 = | 1 1 1 |/ 6,
, V1: V1 = | 1 |: | 1 1 1 | (*)
1 1 1, { , , 1 }.
| ½ 0 0 |
1 1 1 = | 1 0- ½ | ( 1) = - ¼ ( 1)
| ½ -1 -1 |
(*) (**) , V1: V1 = ¼.
. V1: V1 = ¼.
6.76. . , , , .
6.77. ', ', ' M, , (, ') = λ1, (, ') = λ2,(, ') = λ3. '''.
6.78. , , , . , .
6.79. 3/6. .
6.80. 1111. 11.
6.81. 1111, , , 1, 11, .
1 .
6.82. , , S S = ½ sin .
6.83. . , , , .
6.84. , , b, , , , .
6
6.4. ) 1(0,-3,4), 2(2,0,4), 3(2,-3,0); ) 1(0, ,4), 2(-3,0,4), 3(-3, ,0).
6.5. = , = , = .
6.7. ) (6,5,7), (1,3,7); ) (-1,4,-3), (1, 3/2, -1).
6.8. 1(3,6,3), 1(7,7,3), 1(8,3,0), (5,4,4).
6.9. ) , ) , ) , ) .
6.10. ) (2/3, 10/3, 7/3), ) (9/2, 0,0), ) (3, 5 + 2√2)/3, -3)
6.11. ) (-3, ½, 3), ) (17,6,-14), ) (-2,13,6).
6.12. (4,-5,-2).
6.13. z.
6.14. , (-3/2, 5/2, 11).
6.15. ) (7/4, ½, 11/12), ) (13/10, ½, 73/10).
6.17. s = -89/91, s = 23 / 77, s = 36 / 143.
6.18. ) 11 = 5, 12 = , 12 = , ) = 5, N = ,
= 5, Q = .
6.19. .
6.22. 7, /2, /2.
6.23. (0,0,14/9).
6.24. (0,1,-2).
6.25. (1/2, 1, 3/2), r = /2.
6.28. , .
6.29. = /2, = .
6.30. . Δ : = : .
6.31. ) , ) , ) , ) .
6.32. ) , ) , ) , ) .
6.34. ), ) ) - , ) ) .
6.35. ), ) ) , ) ) .
6.36. .
6.37. ) ׳ = ½ + 7z, ׳ = ¼ ½ z, z ׳ = 2z;
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) ׳ = + 2 - 5, ׳ = + + 5, z ׳ = 1/5 z + 2/5;
) ׳ = - + 1, ׳ = 1, z ׳ = - z + 2;
) ׳ = - 2, ׳ = 5, z ׳ = z + 1;
) ׳ = 5/8 + 1/8 + 3/8 z, ׳ = ¾ ¼ + ¼ z + 1,
z ׳ = 3/8 1/8 3/8 z.
6.38. = - ½ ׳ + ½ ׳ + ½ z׳ + ½, = - ½ ׳ - ½ ׳ + ½ z׳ + ½,
z = - ½ ׳ - ½ ׳ - ½ z׳ + ½.
6.39. ׳ = - z + 1, ׳ = , z ׳ = z.
6.40. = - ½ ׳ + ½, = - ½ ׳ + ½, z = - ½ z׳ + ½.
6.41. ) = ׳ + 3, = ׳ 4, z = z ׳ + 8
) = 4 ׳ ׳ z ׳, = 3 ׳ + ׳ z ׳, z = - 6 ׳ - 5z ׳
6.42. ), ), ), ) - , ) .
6.43. (/2, /2, /2)
6.44. (11, -9, 5/2)
6.45. ) -87, ) 204, ) 57, ) 0.
6.46. ) -29, ) 68, ) 19, ) 0,
6.47. ) 29, ) -3 .
6.48. (-19, 0, -10), q (24, 54, 35).
6.49. α = 0, β = - 10, γ = - 20.
6.51. ) 50, ) 8, ) ½.
6.53. ) 2 [ ], ) 4[ ] + [ ] + 2[ ], ) 2[ ] + [ ], ) 0.
6.54. [ ] (-10,-8,19), | [ ] | = , [ ] (-1,2,-3), | [ ] | = ,
[ ] (-3, -1, 5), | [ ] | = .
6.55. ) (1,0,2), ) (10,5,-5), ) (-15,10,18), ) (-21, 13,14).
6.56. ) (-58, -20, 1), ) -80.
6.57. . , , { i, j, k }.
6.59. . , , a b = 0.
6.60. . .. = [ ] (), , .
6.61. . ) = - b [ b ] [ ].
) = , = b, = . , [ b ], [ b ], [ ] γ, , , , .
6.62. . 0, { i, j, k },