4. :
1) , , ;
2) ;
5. , ().
6. :
1) , .
2) ;
3) .
7. :
1) ( , );
2) ( , , , .
3) ( , ).
:
1 )
: , = , = . : . |
:
1. = , , ,
.
2. = , = ( ), , = , = .
3. = k = , , = 2 ( ).
4. , .
2 3 .
8. , .
.
, , , . = , = . ³ : 1. = 2. = 3. = |
, .
:
= 90 - = , ( ).
1. : = = , = = .
2. : = = , = = .
3. : = = , = = .
10. .
, .
, = . : . , , : , m - , . : . |
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