(2.23.1) |
, Oz.
:
,
,
.
(, , ), xOy.
, Oz,
1. c . r0 { , b, i. r { ,,z } r1 { 1,1,z1 } .
2. . , , z 1,1,z1 .
3. .
4. , , .
5. , r1 ,r2 ,r3. .
6. -, M1, M2, M3, m1, m2, m3.
7. {3, 2, 1} {2, 3, 0}.
8. {1, 1, 1}.
9. {4,3, 4} {2,2,l}.
10. , = b () (b) . 12 , . 13. : a = i + j 4 k, b = i 2 j +2 k?
11. b, a +3 b 7 5 b, 4 b 7 2 b
12. .
13. , a ´ c = b ´ c, /=0; , a = b?
14. sin ( b).
15. , = i 3 j + k, b = 2 i j + 3 k.
16. ,
A (3, 4, 1), (2, 0, 3), (3, 5, 4).
17. A,
{ 1, 1, Z1 } { 2, 2, Z2 }.
18. 20 .
19. ij (i+j + k).
20. , abc = ab (c+la+mb).
21. , {3, 4, 5}, {1, 2, 2}, {9, 14, 16} .
22. , A (1, 0, 1), (, 4, 6), (2, 2, 3) D (10, 14, 17) .
23. : (0, 0, 0), B (3,4, 1),
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(2, 3, 5). D (6, 0, 3). .
24. 26 , A. 28. {3, 0, 1}, b {2, 4, 3}, {1, 3, 2}, d {2, 0, 1}. ( x b) x ( x ) (b x d).
25. , (3, 0, 1) {2, 4, 3},
(1, 3, 2) D {2, 0,1}.
26. A (3, 4, 2) , B (1, 2, 3) {6, 6, 7}
27. , , 5. : ) 45; ) 60; ) 135:) 180.
28. , 30 , 3.
29. , x : ) 45; ) 135; ) 180.
30. : ) 1=0; ) 4 2 +3 = 0; ) 3 + 2 5=0; )2 + 5 y = 0; )3 y 7 = 0.
31. , , 3 4.
32. ) 3 + 2 y 6 = 0; ) = 6 3; ) = 1; ) 2 3 y +7 = 0 .
33. y 5 = 0 .
34. , 3 5 y +5 = 0, 5 + 3 y = 0, 2 + 3 = 0, 3 7 = 0. 9
35. ,
, , ,
36. , 8 6 , . .
37. , 2 +5 20 = 0.
38. , 2 = 0, 3 2 + 4 = 0,
2 7 = 0.
39. b, x/a + y/b = 1 : ) 45; ) 60; ) 135?
40. , c : ) 2 = 0; ) 1 = 0; ) +1 =0; ) = 0; ) + = 0; ) 5 x = 0; ) 3 = 0; ) 3 + 2 6 = 0. .
41. , (2, 3) 45.
42. , (2, 3) , (1, 2) (1, 5).
43. , (1, 2) , (4, 3) (2, 1). ^1/18. ABCD: (2, 2), (5, 1), (3, 6), D (0,_3). .
44. :
a) ; ) ; ) ;
) ; ) ;
) ; ) ;
) ; )
45. : 3 2 + 7 = 0, 2 + 3 5 = 0.
46. (3, 3) , 45 5 x 4 1 = 0.
47. , 3 = 0, 4 = 0, 4 + 2 y + 3 = 0.
48. A (2, 1), (3, 1), (1,2).
49. (2, 2), (3, 0) D (3, 1). . 25. , ) = 2 + 3; ) = x /3 1; ) 45 = 3 + 5.
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50. , (2, 3) ) ; ) I ; ) = 4 7; ) 60 = 2 1; ) y = /2 + 8.
51. = 5 +1, .
52. 3 = 0, 2 + 3 11=0 , 5 4 y 17 = 0.
53. 3 3 = 0, 4 + 3 y 4 = 0 , .
54. , 11 7 9 = 0, 12 + 13 y 5 = 0 .
55. + 6 = 0, 2 3 = 0 45 3 5 = 0.
56. , (2, 3) , , y = x /2 + 3.
57. 2 5 = 0 2 3 8 = 0 , 3 2 y + 2 = 0.
58. 2 3 y + 5 = 0 4 y + 5 = 0 45 2 3 = 0 ( 2 3 = 0).
59. + 3 2 = 0, 2 x + y + 5 = 0, 3 x 4 = 0. .
60. (0, 5), (1, 2), (6, 5). , , .
61. (0, 1), (1, 0), (1, 1). .
62. (2, 1), (0, 7), (4, 1). .
63. , , = 4 +4, = +4, 4 = +1.
64. , , 4 = 0, 2 11 y + 37 = 0, 2 + 7 17 = 0.
65. 4 +3 12 = 0 , (1, 2) (1, 4).
66. 3 +2 5 = 0 , (1, 1) (3, 3).
67. , (2, 3), (4, 2), (1, 0). 44. : + 1=0, 3 x + 4 = 0 (3, 3). .
68. ABC: A (2, 1) (2, 5). .
69. : ) 4 7 + 9 = 0; ) 3 / 4 2 y /5 3 = 0; b)4 x /5 3 y /5 1=0; ) x/ 3 + y 5 = 0; ) 5 x /13 12 y /13 + 5 = 0. ?
70. : 7 , , 120.
71. , , 5 , , 60.
72. : ) 3 x + 4 y + 15 = 0; ) 6 x 8 9 = 0; ) 2 + 2 7 = 0; ) + y + 5 = 0.
73. ,
15 8 y 51=0 4 x +3 y + 35 = 0. .
74. (5, 3), , (0,1) (3, 3). .
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75. + 3 y = 0 , + 3 2 = 0.
76. 3 4 10 = 0. , 3 .
77. 5 + 12 + 2 = 0. , 3 .
78. 3 x +4 y 15 = 0 3 x + 4 y + 20 = 0.
79. 5 12y + 28 = 0 5x 12y+15 = 0.
80. : 2 + 5 = 0, 4 + 2 7 = 0. .
81. , (5, 2) 4 (3, 1).
82. (1, 2) 2 /5, (3, 6).
83. , 3 + 4 y 9 = 0 12 x + 9 y 8=0. , .
84. , + 8 26 = 0 4 + 7 y + 29 = 0.
85. (0, 0), (3, 0), (0, 7).
86. , (4, 3) N (2, 1) 4 x + 3 y 2 = 0 , 2.
87. , , : ) (2,3) 3 ; ) (2, 3) (5, 1); ) (3, 9) (7, 3).
88. , (9, 3), ( 3, 3), (11, 1).
89. 2 + + 2 + Dx + + F = 0, 5 (3, 2)?
90. , : ) 2 + y2 4 x + 2 y + 1 = 0; ) 2 2 + 2 2 + 5 3 2 = 0; ) 2 + 2 6 7 = 0;
) 2 + y2 +3 y = 0.
91. , .
92. , (6, 0).
93. , (0, 8).
94. , (5, 0) , 3 .
95. , (4, 7) 4 + 1 =0.
96. ( a)2 + ( b)2= r 2 ( 0, y0).
97. 2+ 2 = r 2 .
98. (x + 1)2 + (y 3)2 = 25 (3, 6).
99. 2 + y 2 = 10. (5, 5).
100. x 2 + y 2 = 5, (7, 1).
101. ) x 2 + y 2 = 13, 4 +6 5 = 0. ) 2 + y 2 + 5 x = 0. 4 3 + 7 = 0.
102. (d) , M (7, 8) ( 2)2 + ( 3)2 = 14.
103. ) (6, 0) (2, 0). , , ) ON x 2 + 2 = 2 , , N NM =0 N. .
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104. , , : ) 5 4;) 8 10; ) 2 6; ) 10 0,6; ) 6 0,8; ) 0,8 8; ) 10 4 . 19. , , : ) 16 2+ 25 y 2 = 400, ) 9 + 36.
105. , : ), , ; ) ; ) ; ) , 5:3. 21 . . ?
106. , (5, 0). , , 0, 6.
107. (8,0) (0,5). , , .
108. (0, 5) (5, 0) (11, 0). , , .
109. , x 2/9 + y 2/4 = 1 (1, 1), (3, 1) (0, 2)?
110. x 2/36 + y 2/12 = 1 (3,3).
111. , 2 5 30 = 0 x 2/75 + y 2/24 = 1. .
112. , (4, 1) x 2/6 + y 2/3 = 1
113. x 2/9 + y 2/2 = 1 (3, 1).
114. x 2/5 + y 2/4 = 1, 6x 2 5 = 0.
115. x 2/6 + y 2/3 = 1, + 5 = 0.
116. x 2/96 + y 2/32 = 1
117. , 2 x = 10.
118. , 2 10.
119. , .
120. 36. , , 9 15.
121. 8, 12,5. .
122. x 2/6 + y 2/5 = 1. (1, 1) , .
123. x 2/8 + y 2/5 = 1. (2, 1) , .
124. , , : ) 5 4 ; ) 14, 12; ) 5 1,4; ) 16 3/4; ) ; ) (2 , 3) (7,6 ).
125. , , :) 25 2 144 y 2 = 3600, ) 16 y 2 9 x 2 = 144.
126. ) ; ) . ?
127. x 2/15 y 2/6 = 1. , 2 .
128. x 2/16 y 2/9 = 1 , 8 . .
129. x 2/8 + y 2/5 = 1. , , .
130. x 2/10 y 2/6 = 1 3 5 y = 0.
131. x 2/9 y 2/8 = 1, (2, 1).
132. . x 2/4 y 2/5 = 1, 3 2 = 0
133. , x 2/ a 2 y 2/ b 2 = 1 b 2.
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134. , . .
135. 1) x 2/ a 2 y 2/ b 2 = 1 . 2) , .
136. e . .
137. 3 = 0 (5, 2). .
138. x 2/2 y 2/7 = 1, +2 3 = 0.
139. , , 6, 10.
140. , , . .
141. x 2/6 y 2/4 = 1 45o.
142. x 2 y 2/4 = 1, 2 .
143. x 2/9 y 2/25 = 1. .
144. , , : ) = b = 2; ) y = x /2^ z 10; ) y = 3 x /5 (10, 3 ).
145. ( 1,0) (2, 0). , . .
146. . , , . .
147. = ( 0, 0).
148. , , : ) , ' 4 ; ) , (2, 4) ; ) , ( 2, 4) ; ) , (0, 3) ; ) , (4, 2) ; ) , ( 4, 2) ; ) (3,0), ; ) (0, 3), .
149. , , (a, b), : ) ; ) ; ) ; ) .
150. , , , , 4 2 9 2 36 = 0 .
151. , , ( 2, 1), , 3 2 + 4 y 248 = 0.
152. , 2 = 2 .
153. y 2 = 6 x. (4, 1) , .
154. 2 = 8 . ( 1, 1) , .
155. (y 2 = 8 x, , 45.
156. 2= 10 . , = 4 5.
157. (y 2=12 , 30.
158. 2 = 4 , (3,4).
159. 2=16 , : ) 2 + 5 = 0; ) 7 = 0.
160. , .
161. :
a) )
) )
) )
)
162. D 3 + 2 z 6 = 0, + 4 z + D = 0 z?
163. D 2 y + z 9 = 0, 3 x + By + z + D =0 ?
164. Ax + By + Cz + D =0, A 1 x + B 1 y + C 1 z + D 1 = 0, : ) ; ) ; ) ; ) Oz?
165. , A (5, 2, 3) (8, 3, 1) 5 3 31=0, 3 + 4 y + 7 z + 14 = 0.
166. , , : ) , ) , , .
167. 2 3 y + 4 z 12 = 0, + 4 2 z 10 = 0. , ; .
168. 3 x +2 y 4 z 5 = 0 6 y 2 z + 4 = 0. . 9*. + z 1=0, + z +1=0 + y + z = 0.
169. 2 x + 3 y 4 z + 5 = 0, x 6 y + 3 z 7 = 0 2 + 2 + z 15 = 0.
170. :
) )
171.
) ) )
.
172. :
173. + 2 z 2 = 0, + 3 z 7 = 0.
174. + z = 0, +2 = 0.
175.
176. (2, 3, 8) , : ) z; ) (x 2)/3 = (y 4)/(2) = (z +3)/5.
177. , (3, 2, 1) (5, 4, 5).
178. , (, b, ).
179. ,
)
)
)
.
180. , ( 3, 5, 9) :
181. , (1, 2, 3), z x y = z.
182. ,
.
183. (7, 3, 5) , 1/3, 2/3, 2/3. , , (2, 3,1) 60.
184. , (, b, )
185. , (, b, ),
186. ,
.
187.
2 + 3 + 3 z 8= 0.
3 4 y + 7 z 33 = 0.
188. 3 2 = 24, 3 z = 4 6 + 15 10 z + 31 = 0.
189. , (1, 2, 3) : ) 5 8 z + 21=0; ) 3 + 11 = 0; ) z = 8.
190. (3, 2, 1) ,
191. (1, 2, 3) + z = 1, 2 + z = 3.
192. + z =1, 2 + z = 3 = = = z 1. 35. ,
3 x 4 + 7 z 33 = 0?
193. , (1, 2, 3)
194. , (2, 3, 1)
195. , + =0, + z 2 = 0 = = z.
196.
,
197. ,
198. (1, 0, 4) , 3 4 y + z 10 = 0, ,
199. , = = z.
200. , (a, b, ) (m 1, n 1, p 1), (m 2, n 2, p 2).
201. , (, b, )
202. , Ax + By + Cz + D = 0, A 1 x + B 1 y + C 1 z + D 1 =0
203.
,
204. ,
205. (, b, ) ,
Ax + By + Cz + D =0,
206. ,
207. , (, b, )
208. 2= 2+ z 2?
209.
2 + 2 + 2 + 2 Dxz + 2 z + Fz 2 = 0?
210. 2 + y 2 + 4 z 2 1 = 0?
211. 2 + 2 z 2 1=0?
212. 2 2 z 24 = 0?
213. z = 2+ 2?
3.
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