-
, , -
, . .
2.2
:
:= -2; := 1; := 2.
:
cos : = cos : = ; cos : = ;
Δ = 3; cos = -0.667; cos = 0.333; cos = 0.667.
, -
, ..
.
2.3
:
; .
:
;
cos = 0.467; = 1.085 (.); = 62.188˚.
arccos
acos.
,
.
1(2;-1;3), 2(1;1;1), 3(- 4;0;3). , , . = , = . ,
, 1,2,3 .
= 6, = 0.5, = 0,
, , .
123
. -
, 123
2x + 12y + 11z - 25 = 0.
3.
"" p , p ( ), ( ), p ( ).
(
, -; : 2, 3, ). p, p p , p p . p p pp 2 " . p" ( p 2 n=101, P30 = 11
12):
p
1.
1.1. p p 12
1.2. p p
1.2.1. 1
1.2.2. 2
1.2.3. 3
1.2.4. 4
1.2.5. 5
1.2.6. 6
1.2.7. 7
1.2.8. 8
1.2.9. 9
1.2.10. 11
2.
3.
3.1. p p 12
3.2. p p
3.2.1. 1
3.2.2. 2
.
3.2.9. 9
3.2.10. 11
p
p p p p p.
|
|
1
n = 101. 4 = 1 . 1.1 2.
= 100
. ( ), , 90˚, α = 3˚([n/4] + 1).
n = 101, [n/4] = 25 α = 78˚.
( ). , - = (. . 3.1) - , , .. ( - ).
N L
C M1 B M x
K N1
. 3.1.
. L LM LN, , , , M N. ,
,
, , , , , .
, . 3.1, .
,
,
, ..
()
. BML , = , BL = P, ML = b, BML ,
3
: 1 = P2 + 2 - 7 , 2 = 3 + P3 + 4
3 = -2 + 5 . (- 1), 2 , 3
, , , , 0 (0; 1; P7 ) (6 ; 0; 1).
n = 101. 2 = 1, 3 = 2, 5 = 1, 6 = 5, 7 = 3,
1 = (1; 2;-7), (- 1) = (-1;-2;7), 2 = (3;2;4), 3 = (0;-2;1)
= (- 1) + 2 + 3 = (2;-2;12).
, ,
, -
- . -
= (6 - 0; 0 - 1; 1 - P7) = (5; -1; -2).
= = 25 + (-2)(-1) + 12(-2) = -12.
7
: A(1; -P2; -1), B(1-P3 ; 0; 1), C(-1; 1; P5-2), D(P2; P4; P8). ?
, ?
, .
n = 101. 2 = 1, 3 =2, 4 =1, 5 =1, 8 = 5.
, , , D ,
, .. -
.
= (1 - 3 -1; 0 - (- P2); 1 - (-1)) = (-2; 1; 2),
= (-1 - 1; 1 - (- P2); P5 - 2 - (-1)) = (-2; 2; 0),
= (P2 - 1; P4 - (- P2); P8 - (-1)) = (0; 2; 6),
, , , , D
|
|
,
V =
9()
A(11,-5), B(6,7), C(-10,-5). p-
p A.
p p p p p
( )
= (6 - 11; 7 - (-5)) = (-5;12);
= (-10 - 11; -5 - (-5)) = (-21;0); = 21.
= 21 (-5;12) + 13 (-21;0) = (-378;252) = 126 (-3;2).
p, p p p A p = (-3;2) p p
10
(0;2) p p p p 5x - 4y + 15 = 0 4x + y - 9 =0. p p p p p p.
p p p p p, p p
p p p. p p, p p p:
- p p p;
- p i- p p, i = 1,2,3.
p pp p A1A2A3, A (), i = 1,2,3 (. p. 3.2)
3
1 2
. 3.2. p 10
B p p 12. 3 - p- 123. p p p A3O = 2∙BO. p B p
p p O p
p p p
, p p , p p.
p p 10. p, = 1 = 5, = 0 = 2, p, p p p p
+ = -1, + = 1.
p p, , p p, p p, .. p p p p
5x - 4y + 15 = 0, 4x + y - 9 = 0.
, p p , p (p)
, = -3, = 0, = 2, = 1.
, p p p p p, p p (-3;0) (2;1)
, p p p x - 5y + 3 = 0, p p p (1;5), (-3;0), (2;1).
4.
1. .
, . -
(,, )
.
2. ,
. ,
(
.
3. ,
, .
.
V1, V2, V3.
4. ,
( ,
, ).
""
"" .
5. .
6. ()
.
7. .
.
8.
.
.
9. . -
|
|
. -
.
.
10. .
. -
.
11. .
12. .
. , -
.
13. " " (
, ).
,
( " ").
14. . -
. ,
( ).
15. : ;
; .
16. .
17. .
. ,
.
18. , ,
.
19. : , ,
. ,
( ).
20. , ,
( ; ).
21. .
.
1. .., .. . .: ,
1981. 232.
2. .., .. .
. .: ,1984. 192.
3. .., .. : .
.: , 1987. 256.
4. .., .., ..
: 2- . .1. .: ..,1996. 304.
5. .
/ . ..
.. . .: , 1987. 464.
6. .. . .: , , 1997. 863.
7. , -
/ ...-;.:.. , .. , .. . , 1999. 65.
8. MATHCAD 6.0 PLUS. ,
WINDOWS 95: . . .: -
"", 1996. 712.