Kazi: 24 опять расход в ответе
Date: 2015-10-07; view: 407.
ЭЛЛИПТИЧЕСКИЙ ПАРАБОЛОИД
41. Find scalar product 
if coordinates of points are A(-3, -1), B(0, -4), C(2, 3), D(4, 1).
42. Find slope of the straight line 2x-1=0.
k = - 
43. Find slope of the straight line 1+y=0.
k = 0
44. Find length of the line segment intercepting by straight line x+y= -1 on OX-axis.
45. Coordinates of two points are A(2,2) and B(4,8). Find ordinate of the midpoint of segment AB.
(3, 5)
46. The modulus of vector a 2i j 2k is
47. Find the value of so that vectors a i 2 j 2k and b 4i 1j k will be perpendicular.
48. Two vectors a 1,,2and b 2,2,4are collinear if equals
5 Kazi: -1 я лично уверен в своем ответе!!!
49. Absolute values of two vectors are | a |1, | b |2 and their scalar product a, b 1. Find the modulus of the vector product [a, b ] .
50. Two points A(1,2) and B(3,4) are given. Find coordinates of point C which divides the segment AB in the ratio 2:1.
( 
, 
)
51. Let points A(1,1), B(2,2), C(3,-1) be the consecutive vertices of the parallelogram. Find coordinates of the fourth vertex.
D (2, - 2) Kazi: (0,4) ßЗуб даю я здесь решил правильно!Не *бет ответ (0,4)!!!
52. Find the angle between straight lines x-5=0 and x-y+3=0.
53. Find equation of the straight line through point M(2,-1) and parallel to the straight line 2x+3y=0.
2x + 3y – 1 = 0
54. Find equation of the line through the point of intersection of two lines 3x-y=0 and x+4y-2=0 and perpendicular to the line 2x+7y=0
91x – 26y – 2 = 0 Kazi: 7x-2y+2=0 конкретная шала-мала)))
55. Vertices of triangle ABC are A(-2, 3, 1), B(-2, -1, 4), C(-2, -4, 0). Find angle C in the triangle.
56. Find equation of the plane which passes through the points M1(1,3,-1), M2(2,1,-2) and M3(4,2,- 6).
3x + 2y – z – 10 = 0 Kazi: -9x-2y+5z-10=0 то же самое!
57. Straight line is given by 2x-y+3z-5=0 and 4x+3y-2z+8=0. Find canonical equation of the line.
= 
= 
Если чо, НЕ паникуй ^_^ <<<<By Alish))))
58. Volume of parallelepiped constructed on vectors is equal to the
Kazi: V= 
or V= 
я от себя добавил так что не помешает/)))
59. If coordinates of two points are A(1,1) and B(3,-2) find coordinates of vector AB and its length.
AB = (2, -3) 
60. If coordinates of two points are A(3,2) and B(-4,1) find coordinates of vector AB and its length.
(-7, -1) 5 
61. If coordinates of two points are A(-2,2) and B(3,-2) find unit vector AB0.
e = 
= cos 
i+ cos 
j Kazi: cos 
; cos = 
; answer: 
62. If coordinates of two points are A(3,2) and B(-4,1) find unit vector AB0 .
Cos = 
Kazi: 
63. If coordinates of three points are A(-2,1), B(3,-2), C(0,4) find coordinates of point D so that AB DC.
(-5, 7)
64. If coordinates of three points are A(3,2), B(-4,1), C(2,-1) find coordinates of point D so that AB DC. Что помечено синим я тупо не решал или не смог
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