1. .
2. 251 ( 75).
: , : b < < b + ; < b < + ; b < < + b.
3. 248.
III. .
1. 249.
:
1) 25 , 25 10 . :
25 < 25 + 10 .
25 < 35 .
, 10 ;
2) 10 , 10 25 . 25 < 10 + 10; 25 < 20 .
: 10 .
2. 250 ().
3. 253 .
1) , 
C . , , = = .
2) > > , . , , : =
= 4 (), = + 4.
3) + + = 25 , 2 + = 25 .
= + 4, 2 + + 4 = 25;
3 = 21; = 7 , = 11 , = 7 .
: 7 , 11 , 7 .
4. 246 129 .
IV. .
: 3033; 19 . 8990; 242, 250 (, ).
35
: ; ; ; .
I. .
1) 19 . 8990;
2) : 4 , 5 8 ; 6 , 12 3 ; 9 , 9 7 ?
II. .
1. 243 .
| :  ; 1 ;
D || 1; D  .
: = D.
1 , 1 = 2.
|
1 = 4 1 D D. 1 = 2; 1 = 4; 2 = 3 , 3 = 4, , D , , = D.
2. 1: = 10 . D, D D = D.
| : ; = 90;
= 10 . D D = D.
: D.
2 = , D = = D. 1 + 2 = 90; + = = 90; 2 = , = = 1, , D , D = D.
|
, D = D , D = D , , D = 
= 5 .
|
|
|
: 5 .
3. 2: K D.
| , K < .
K DK, 1 , , 2, 1 = 2.
K > 2, > K ( ).
|
4. 298 145 .
III. (15 ).
I
D, = 75; = 35.
1) , D .
2) D D.
II
D F, C = 90; D =
= 30.
1) , DF .
2) CF DF.
IV. .
: , 1733; 244, 252, 297.
I
D, = 75; = 35.
1) , D .
2) D D.
II
D F, C = 90; D =
= 30.
1) , DF .
2) CF DF.
I
D, = 75; = 35.
1) , D .
2) D D.
II
D F, C = 90; D =
= 30.
1) , DF .
2) CF DF.
I
D, = 75; = 35.
1) , D .
2) D D.
II
D F, C = 90; D =
= 30.
1) , DF .
2) CF DF.
I
D, = 75; = 35.
1) , D .
2) D D.
II
D F, C = 90; D =
= 30.
1) , DF .
2) CF DF.
I
D, = 75; = 35.
1) , D .
2) D D.
II
D F, C = 90; D =
= 30.
1) , DF .
2) CF DF.
I
D, = 75; = 35.
1) , D .
2) D D.
II
D F, C = 90; D =
= 30.
1) , DF .
2) CF DF.
49
4
: .
|
|
|
