.


:




:

































 

 

 

 


(n2).




2xn nx2 .

1. , () .

2. () , , () . () .

3. , () .

4. , , . XY A1A2 ( 5.1). U = (u1, u2). U u1 A1, - u2 A2. 1 1, 2 2.

1 2 . ( OY) 1, A2. A1, B1 B 2, B2 5. 2 5 OY B1 B2. B'1 B'2 ( 6 4).

B1 B'1, B2 B'2, , OX .

, B1B'1 OX A A1 A2( u1 u2) B1 B.

 

5.1 5.3 ( )

, B1MB'2 A . , , U* = (, ), v.

M , B1B'1 B2B'2.

. , , :

.

B1B'1:

= y = 4x + 2.

B2B'2:

= y = -x + 5.

:

y = 4x + 2, y = -x + 5.
 

:

  4x + 2 = -x + 5, 5x = 3, x = 3/5, y = -3/5 + 5 = 22/5.

, U* = (2/5, 3/5), v = 22/5.

 

B. , , , 5.2 A2MA'1.

 

5.2 5.3 ( B)

.

 





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