Методичка
.pdf7.a = −5i − 3 j + 7k
8.a = −6i + 5 j + α k
9.a = −4i + 5 j − 3k
10.a = αi + 2 j + 13k
11.a = −i + 2 j + 2k
12.a = −7i −11 j + k
13.a = αi + 8 j − k
14.a = −5i + j − 7k
15.a =15i − 6 j + k
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b = αi + 7 j − 2k b = −16i − 8 j − 7k b = αi − 6 j + 2k b = −2i − 3 j + 2k b =12i − α j − 5k b = −3i + 3 j + α k b = 3i + 5 j + k
b = −7i + α j + 7k b = −i − 5 j + α k
Перевірити перпендикулярність векторів ` a і b .
16. |
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17. |
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= ( 7, -5, 2 ) |
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18. |
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= ( 6 , -17, -3 ) |
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= ( -4, -3, 9) |
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19. |
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= ( -6, 2, -7) |
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= ( -2, -5, 1 ) |
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20. |
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= ( 5, 1, -3 ) |
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= ( 4, -2, 6 ) |
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21. |
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= ( 4, 9, 3 ) |
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= ( 12, -4, -2 ) |
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22. |
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= (-7, 7, -2 ) |
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= (-5, -3, 7 ) |
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23. |
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= ( 10, -2, 13 ) |
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= (-4, 3, 3 ) |
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24. |
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= (-9, -6, 2 ) |
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= (-4, 5, -3 ) |
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25. |
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= ( 3, 2, 5 ) |
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= (-13, -1, 8 ) |
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26. |
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= ( 12, 11,-5 ) |
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= (-1, 2, 2 ) |
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27. |
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= (-2, 6, 1 ) |
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= (-5, 1, -7 ) |
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28. |
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= (-1, -5, -15 ) |
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= ( 15, -6, 1 ) |
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29. |
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= ( 4, 9, -7 ) |
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= ( 12, -4, 2 ) |
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30. |
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= ( 16, 8, 7 ) |
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= ( 6, -5, -8 ) |
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2.2.9 Знайти роботу, яку виконує сила `f , рухаючись
прямолінійно із точки А в точку В.
1. |
`f = ( 3, -2, 6 ), |
А ( 2, -6, -1 ), |
В ( -3,-5, 2 ) |
2. |
`f = ( -2, 7, -1), |
А ( -4, 4, 3 ), |
В ( 2, 5, -4 ) |
3. |
`f = ( 5, -6, -1), |
А ( -3, 3, -2), |
В ( 1, 5 , 3) |
4. |
`f = ( -3, 7, -2), |
А ( -8,-1, 5), |
В (-1, 2 , 3) |
5. |
`f = ( 8, -3, 7), |
А ( -2, -5, 7), |
В ( 3, 2, 5) |
6. |
`f = ( -2, -3, 7 ), |
А ( -15, 8, 4 ), |
В ( -7, 3, 5 ) |
7. |
`f = ( 1,-5, -2 ), |
А ( -10, -2, 2), |
В ( 2, 1, -3) |
8. |
`f = ( 4, 5, -1 ), |
А ( 2, -1, -3), |
В ( -1, 2, -8) |
9. |
`f = ( 7, 5, -4), |
А ( 7, 5, -1), |
В ( 5, 8, -3) |
10. |
`f = ( -2, 5, -3), |
А ( -8, 1, 3), |
В ( -1, 7, 5) |
11. |
`f = ( 3, -4, 2 ), |
А ( -5, 2, 8), |
В ( 2,3, 5 ) |
12. |
`f = ( -3, 5, -2), |
А ( -5, -4, 12), |
В ( 3, -6, -11 ) |
13. |
`f = ( -4,-3, 7 ), |
А ( 2, 8, -3), |
В ( 8, -9, -5) |
14. |
`f = ( 3, 2, 13), |
А ( 7, -6, 6), |
В ( 5, -9, 8) |
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15. |
`f = ( -7, -11, 5), |
А ( -8, 4, -3), |
В ( -5, 3, 2) |
16. |
`f = ( -12, 13, -2) |
А ( 8, -7, -2), |
В (9, -5, -3 ) |
17. |
`f = ( -9, 5, -4), |
А ( -3, 8, 2), |
В ( -7, 5, 3) |
18. |
`f = ( -6, 5, -4), |
А ( 6, 3, -2), |
В ( -7, -5, 3) |
19. |
`f = ( -3, -5, 1), |
А ( 5, 2, 3), |
В ( 10, -5, 2) |
20. |
`f = ( 11, -3, -4), |
А ( -10, 2, 6), |
В ( -13, 3, -8) |
21. |
`f = ( -8, 7, 1), |
А ( 8, -2, -3), |
В ( 5, -3, 1) |
22. |
`f = ( 15, -6, 1), |
А ( 4, -3, -5), |
В ( 3, -8, 2) |
23. |
`f = ( 5, -4, -7), |
А ( -4, -3, 10), |
В ( 2, 4, 7) |
24. |
`f = ( -4, -3, -1), |
А ( 4, -3, -1), |
В ( -5, 2, -4) |
25. |
`f = ( 3, -2, 5), |
А ( -10, -3, -1), |
В ( 7, 5, -3) |
26. |
`f = ( -5, 3, -7 ), |
А ( -4, -9, 3), |
В ( 3, -5, -4) |
27. |
`f = ( 2, 7, -3 ), |
А ( 6, -11, 4), |
В ( -7, -3, 5) |
28. |
`f = ( -5, -13, 3), |
А ( 5, 7, -2), |
В ( 8, 3, -5) |
29. |
`f = ( 7, -4, 1), |
А ( -5, -3, 2), |
В ( 3, 2, -5) |
30. |
`f = ( 12, -7, -2), |
А ( -8, -1, 2), |
В ( -5, 3, -9) |
2.2.10 Знайти вектор `m, коли відомо, що він колінеарний до
вектора |
a |
і задовольняє умові |
m |
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1.. a = ( 5,-1 ,7 ), |
с = 150 |
2. |
a = ( 2,-3 ,4 ), |
с = -58 |
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3. |
a = ( 4, 2,-1 ), |
с = 42 |
4. |
a = ( 3, 2,-2 ), |
с = -34 |
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5. |
a = ( -6, 1,-3 ), с = 92 |
6. |
a = ( 1, -4, 6), |
с = -106 |
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7. |
a = ( 2, -2, 7 ), |
с = 114 |
8. |
a = ( -3, -4, 2 ), с = -58 |
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9. |
a = ( 1, 7, -2), |
с = 108 |
10. a = ( 2, -6, 1), |
с = -82 |
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44 |
11. a = ( 1, -3, -5 ), с = 70 |
12. a = ( -4, 2, -3), с = -58 |
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13. a = ( 7, -2, |
4 ), |
с = 138 |
14. a = ( -5, 1, -3), с = -70 |
15. a = ( 2, -3, |
-2), |
с = 34 |
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Знайти координати вектора `с, колінеарного до вектора `а, причому вектор `с утворює гострий кут з віссю Ох, а модуль вектора `с відомий.
16. |
a =(-2, 1,-2), |
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=6 |
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17. |
a =( 3,4,-1), |
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== 2 |
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18. |
a =( 1,-2, 1), |
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a =(1,-2,1), |
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20. |
a =(-3, 1,-2), |
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21. |
a =(2,-1,-2), |
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=6 |
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22. |
a =(-4, 1, 1), |
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23. |
a =(1,-3, 4), |
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24. |
a =(-1, 2, 1), |
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25. |
a =(4,-1,-1) |
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26. |
a =(-2, 1,-1), |
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27. |
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28. |
a =(-2, 4, 1), |
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29. |
a =(2,-2, 3) |
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30. |
a =(-1,-2, 4), |
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2.2.11 Обчислити площу паралелограму, побудованого на векторах `m та `n і знайти скалярний добуток m × n .
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m = a - 3 |
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n = a + 2 |
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2. |
m = a + 3 |
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n = 3a - |
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n = a + 2 |
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m = 3a + |
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n = a - 2 |
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5. |
m = 3a + 2 |
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( a,ˆ b )=p/2. ( a,ˆ b )=2p/3 ( a,ˆ b )=p/4 ( a,ˆ b )=3p/4 ( a,ˆ b )=p/6
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6.m = 2a + 3b
7.m = 3a + 2b
8.m = 6a − b
9.m = 5a + b
10.m = a − 4b
11.m = 3a − b
12.m = a − 2b
13.m = 3a + 4b
14.m = 3a − 2b
15.m = 5a − b
16.m = 3a − 5b
17.m = 4a + b
18.m = 2a − b
19.m = 2a − 3b
20.m = a + 3b
21.m = 5a − b
22.m = 3a + b
23.m = 6a − b
24.m = a + 4b
25.m = 2a + 3b
26.m = 2a − 5b
27.m = a + 3b
n = a − 2b n = a − b n = a + b n = a − 3b
n = 3a + b n = a + 2b n = 2a + b n = b − a n = a + 5b n = a + b n = 2a + 3b n = a − b n = a + 3b n = 3a + b n = 7a − 2b
n = 3a + b n = a − 3b n = a + 2b n = 2a − b n = a − 2b n = a − 3b n = a − 2b
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a = 2 a = 2/3 a = 4 a = 3 a = 1 a = 2
a = 3 a = 1/2
a = 23 a = 2
a = 2/3 a = 29 a = 4
b = 2/7 b = 1/5 b = 2/7 b = 2
b = 2 b = 2/3 b = 3 b = 2/7
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( a,ˆ b )=π/3 ( a,ˆ b )=π/2 ( a,ˆ b )=5π/6 ( a,ˆ b )=2π/3
( a,ˆ b )=π/6 ( a,ˆ b )=π/3 ( a,ˆ b )=3π/4 ( a,ˆ b )=π/2 ( a,ˆ b )=5π/6 ( a,ˆ b )=π/6 ( a,ˆ b )=π/3 ( a,ˆ b )=π/4 ( a,ˆ b )=π/2 ( a,ˆ b )=π/6 ( a,ˆ b )=π/2
( a,ˆ b )=5π/6 ( a,ˆ b )=π/6 ( a,ˆ b )=2π/3 ( a,ˆ b )=π/3 ( a,ˆ b )=π/4 ( a,ˆ b )=5π/6 ( a,ˆ b )=π/3
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28. |
m = 4a − 3 |
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n = 5a − 4 |
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m = 2a + 7b |
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30. |
m = 7a + |
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n = a − 3 |
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2.2.12 Дано векторного добутку.
1.a =(-1, 2, 1),
2.a =(5, 1, 1),
3.a =(-1, 2,-1),
4.a =( 10, 3, 12),
5.a =( 1, 1, 1),
6.a =(-3, 1, 1),
7.a =( 1,-1,-3),
8.a =(-3, -4, -3),`
9.a =( 3,-2, 4),
10.a =( 5, 17, 9),
11.a =( 1, 2, 1),
12.a =(-1,-1, 3),
13.a =( 1, 2, 1),
14.a =( 17, 10, 7)
15.a =( 1, 9, 3),
вектори `а та` b . Знайти координати
b = (3,-4, 2), b = ( 5, 1, 3), b = ( 2, 4,-5), b = ( 2, 1, 4) b = ( 10,-1, 2), b = ( 5,-2, 1), b = ( 1, 1, 1), b = (0,-2,-2),
b = (-3, 3, -8), b = (-1, -2, -1), b = ( 1, 6, -1), b = (-2, -1, 3), b = ( 11, 12, 4), b = ( 1, 1, 1), b = ( 1, 4, 1),
[(3 a + 2b ), (2a + b )] [(3 a − 2b )(, 2a − b )] [(5 a − 2b ), (3a − b )] [(2 a − 7b ),(5b − a )] [(7a − b ), (b − 2a )]
[(4 a + 3b ), (3a + 2b )]
[(2a + 3b )(, a + 3b )]
[(3a − 7b ),(1/ 2b − a )]
[(5 a + 3b ),(3a + 2b )] [(2 a + 13b ), (a + 5b )] [(5 a − 2b ), (2a − 3b )]
[(3a − 4b ),(b − 3a )]
[(13 a − 2b )(, b − 6a )] [(a − 11b ), (17b − a )]
[(4 a − 7b ), (3b − a )]
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16.a =(0, -2, -2),
17.a =(-2, 8, 4),
18.a =( 4,-11, 18),
19.a =( 2, -1, -2),
20.a =( 1, 0, -7),
21.a =( 1, 2, -3),
22.a =( 1, -1, -1),
23.a =(-1, 1, 1),
24.a =( 11, 16, 13),
25.a =( 2, 3, 5),
26.a =(-1, 4, 1),
27.a =( 1, -1, 0),
28.a =( 3, 1, 10),
29.a =( 3, 2, -2),
30.a =(-1, -1, 9),
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b = ( 1, 4, 7), b = (-1, 1, 1), b = ( 1, 1, 1),
b = ( 10,-6, -11), b = (-1, 1, 5),
b = ( 0, 1, -2), b = (0,-6, -2), b = ( 1, 6, 3), b = (1, 1, 1) b = ( 3, 2, 5),
b = =(-1, 2, -1), b = ( 1 ,-3 , 1), b = ( 1, 0, 1), b = ( 6, 5, -4), b = ( 0, -1, 2),
[(7 a + 3b ), (1/ 2a + b )]
[(a − 7b )(, 4b − a )]
[(a −13b ), (11b − a )] [(13a − 2b ), (6a − b )]
[(5 a + 8b )(, a + 2b )] [(3a − 8b ), (a − 2b )]
[(5 a − b ), (1/ 2b − a )]
[(8 a − b ),(b − 3a )]
[(a − 17b )(, 22b − 2a )] [(6 a − 5b ),(2a − 3b )]
[(2 a − 5b ), (a − 3b )] [(8a − 3b ), (b − 2a )]
[(2 a −15b ),(10b − a )] [(12 a − 5b ), (2a − b )] [(3 a −11b ), (4b − a )]
2.2.13 Знайти момент сили `p відносно точки С, якщо сила
прикладена до точки А.
1. |
p =( 0, -4, -8), |
А( -1, 2, 4), |
С (3, 0, -1). |
2. |
p =(-5 -7, -4), |
А( 3, 10, -1), |
С (-6, 0, -3). |
3. |
p =( 4, -1, -10), |
А( -7, 3, 2), |
С (-4, 1,-8 ). |
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4. |
p =(-2, 2, 3), |
А( -2,-1,-1), |
С (-6,-1,-7). |
5. |
p =( 4, -5, 0), |
А( -3, 3, 5), |
С (-3, 7, 2). |
6. |
p =( 4, 0, 8), |
А( -1, -4, 2), |
С (1, 1, -2). |
7. |
p =( 7, 4, 5), |
А( -3, -3, -2), |
С (7, -1, 7). |
8. |
p =(-1,-10, 4), |
А(-3, 6, -2), |
С (-5, -4, 1). |
9. |
p =(-2, -3, 2), |
А( -7, 11, 3), |
С (-7, 17, 7). |
10. |
p =( 5, 0, -4), |
А( 5, 2, 7), |
С (1, 5, 7). |
11. |
p =(-8, 0,-4), |
А( -1, -4, 2), |
С (-6, 0, 0). |
12. |
p =(-4,-5,-7), |
А(11, -3, 12), |
С (9, -12, 2). |
13. |
p =(-10, 4,-1), |
А(12, 6, -7), |
С (2, 9, -9). |
14. |
p =( 2, 3, -2), |
А( 6, -8, -5), |
С (6,-14,-9). |
15. |
p =( 0, 4,-5), |
А( 7, -5, 2), |
С (4, -5, 6). |
16. |
p =( 0, 4, 8), |
А(-3,-6,-2), |
С (-7, -4, 3). |
17. |
p =( 5, 7, 4), |
А( 2,-5,-2), |
С (11, 5, 0). |
18. |
p =(-4, 1, 10), |
А( 1, -5, -4), |
С (-2, -3, 6). |
19. |
p =( 2, -2, -3), |
А(-1, 1, 3), |
С (3, 1, 9). |
20. |
p =(-4, 5, 0), |
А( 1, 2,-7), |
С (1,-2,-4). |
21. |
p =(-4,-8, 0), |
А( 0, 1, 1), |
С (-2,-4, 5). |
22. |
p =(-7,-4, -5), |
А(-2,-1, 2), |
С (-12,-3,-7). |
23. |
p =( 1,10,-4), |
А(-1, 2, 1), |
С (1,12,-2). |
24. |
p =( 3,-2, 2), |
А(-5, 5,-2), |
С (-11, 1,-2). |
25. |
p =(-5, 0, 4), |
А( 1, 2, 3), |
С (5, -1, 3). |
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26. |
p =( 8, 0, 4), |
А(-5, 5, 5), |
С (0, 1, 7). |
27. |
p =( 4, 5, 7), |
А( 0,-4,-6), |
С (2, 5, 4). |
28. |
p =( 10,-4, 1), |
А(-5, 3,-4), |
С (5, 0, 2). |
29. |
p =(-3, 2,-2), |
А(-4, 1,-3), |
С (2, 5,-3). |
30. |
p =( 0,-4, 5), |
А(-2,-10, 9), |
С (1,-10, 5). |
2.2.14 Дано координати вершин трикутника АВС. Знайти
S ABC , npAC AB , довжину висоти ВD та внутрішній й зовнішній кут
при вершині А.
1. |
А(-3,-6,-2), |
В (-7,-4, 3), |
С (-3,-2, 6). |
2. |
А( 3, 10,-1), |
В (-6, 0,-3), |
С (-2, 3,-5). |
3. |
А( 1, 1, 2), |
В (-1, 1, 3), |
С ( 2,-2, 4). |
4. |
А( 2,-1, 2), |
В ( 1, 2,-1), |
С ( 3, 2, 1). |
5. |
А( 2, 3, 1), |
В ( 4, 1,-2), |
С ( 6, 3, 7). |
6. |
А(-1, 2, 4), |
В ( 3, 0,-1), |
С ( -1,-2,-4). |
7.А( 2,-5,-2), В ( 11, 5, 0), С ( 7, 2, 2).
8. |
А( 0,-1,-1), |
В (-2, 3, 5), |
С ( 1,-5,-9). |
9. |
А(-2, 0,-4), |
В (-1, 7, 1), |
С ( 4,-8,-4). |
10. |
А(-2,-1,-1), |
В (-4, 1, 2), |
С (-6,-1,-7). |
11. |
А( 1, 0, 1), |
В ( 5,-2,-4), |
С ( 1,-4,-7). |
12. |
А( 2,-2,-1), |
В (-7,-12,-3), |
С ( -3,-9,-5). |
13 |
А( 5,-1,-2), |
В ( 6,-4, 1), |
С ( 4,-4,-1). |
14. |
А( 7, 2, 4), |
В ( 3, 3, 1), |
С ( 7,-1,-2). |
15. |
А(-1, 1, 3), |
В ( 1,-1, 0), |
С ( 3, 1, 9). |
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16. |
А( 2,-1,-4), |
В (-2, 1, 1), |
С ( 2, 3, 4). |
17. |
А(-2,-3,-3), |
В ( 7, 7,-1), |
С ( 3, 4, 1). |
18. |
А( 4,-1,-3), |
В ( 3, 2,-5), |
С ( 6,-1,-4). |
19. |
А( 3,-1, 4), |
В ( 5,-5,-2), |
С ( 2, 3, 12). |
20. |
А( 5,-2,-5), |
В ( 3, 0,-2), |
С ( 1,-2,-11). |
21. |
А(-4, 2,-1), |
В ( 0, 0,-6), |
С (-4,-2,-9). |
22. |
А(-3, 12, 11), |
В (-12, 2, 9), |
С (-8, 5, 7). |
23. |
А( 6,-3,-4), |
В ( 7, 4, 1), |
С ( 0, 5,-4). |
24. |
А( 2,-3,-4), |
В ( 4,-3,-5), |
С ( 1, 0,-6). |
25. |
А( 3,-7, 11), |
В ( 5,-9, 8), |
С ( 7,-7, 17). |
26. |
А( 5, 5,-5), |
В ( 1, 7, 0), |
С ( 5, 9, 3). |
27. |
А( -4, -6, 0), |
В ( 5, 4, 2), |
С ( 1, 1, 4). |
28. |
А(-3, 4,-1), |
В ( 1, 3, 2), |
С (-3, 7, 5). |
29. |
А( 1, 1, 2), |
В ( 2,-2, 4), |
С (-1, 1, 3). |
30. |
А(-5, 6,-8), |
В (-7, 8,-5), |
С (-9, 6,-14). |
2.2.15 Дано вектори `а, `b `с. Знайти їх мішаний добуток і з′ясувати, праву чи ліву трійку утворюють дані вектори.
1. |
`а= ( 3,-1, 2), |
`b= ( -3, 1, 3), |
`с= (-2, 1,-4). |
2. |
`а= (-4, 7, 2), |
` b = ( 3,-5,-1), |
`с= ( 7,-9,-3). |
3. |
`а= ( 6,-3,-5), |
` b = (-3, 1, 2), |
`с= ( 7,-4,-6). |
4. |
`а= ( 5, 12,-3), |
` b = ( 3, 7,-2), |
`с= (-3,-6, 1). |
5 |
`а= ( 12, 9,-2), |
` b = ( 2, 1,-1), |
`с= (-7,-5, 2). |
6. |
`а= (-1, 2, 3), |
`b = ( 1, 3,-3), |
`с= ( 1,-4,-2). |
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