: 1
: 3 , 50% ; 3 5 60%; 5 8 80%, 8 100% . : 0, 2½, 3, 4½, 5, 7, 8 9 ; 30000 40000 . .
6: :
| - | - | - | - | - | - | ||
| - | - | - | , | - | |||
| - | - | , | |||||
| - | - | - | - | ||||
| , | , | , | , | , | |||
| 18-25 | * | * | * | ||||
| 12-31 | * | * | * | ||||
| 98-17 | * | * | * | ||||
| 87-16 | * | * | * | ||||
| * | * | * | * | * | * | * |
7: : 20. , 
. A . , A . 䒺 , 䒺 . .
8: : 2.50. : ) ; ) :
| x1 | -6x2 | 4x3 | =1 |
| x1 | -5x2 | -5x3 | =2 | |
| x1 | -4x2 | 3x3 | =3 |
: .. . " " 9 ( .100). 401
18: :
m - ; F - - ; Sn - - .
-31 2 :
| a | b | c | d | f |
1-3. 1, 2, 3 : .., .., - .. Microsoft l : . : "", 2010. 95 .(.419).
4: y , : a=16; b=-6; c=25,34; k=5; d=8,1234; p=2,45×102; x .
| 2 | 
| c<x<p; c>x; . |
: 2
쳿 , 㳿, : 10 . . ., 쳿 25% 2 . . .; 10 20 . . . 20% 3,4 . . .; 20 50 . . . 17% 6 . . . : 2 ., 9 ., 10 ., 18 ., 20 ., 40 ., 50 . 95 . . .
|
|
|
6: :
| N | , . | ||||
| / | |||||
| . | . | ||||
| 2352.35 | 982.35 | * | * | ||
| 8234.78 | 558.42 | * | * | ||
| 9185.72 | 1065.87 | * | * | ||
| 10210.35 | 987.67 | * | * | ||
| 9200.41 | 12098.87 | * | * | ||
| * | * | * | * |
7: : 19. , 
. C 䒺 , 䒺 . 䒺 , 5, 6. , C. .
8: : 2.49. : ) ; ) :
|
| x1 | +x2 | -4x3 | =0 |
| 3x1 | +2x2 | -5x3 | =1 | |
| 2x1 | +4x2 | -5x3 | =-2 |
: .. . " " 9 ( .100). 402
18: ':
n - , '; - // - , .; dm - - .
-31 3 :
| a | b | c | d | f |
1-3. 1, 2, 3 : .., .., - .. Microsoft l : . : "", 2010. 95 .(.419).
4: y , : a=16; b=-6; c=25,34; k=5; d=8,1234; p=2,45×102; x .
| 3 | 
| x>p; k≤x≤p; . |
: 3
쳿 , 㳿, : 50 . . . 100 . . ., 쳿 12% 10 . . .; 100 500 . . . 10% 35 . . .; 500 . .. 2 . . . 7% 80 . . . : 30 ., 50 ., 95 ., 100 ., 400 ., 500 ., 1½ ., 2 . 3 . . .
|
|
|
6: :
| ʳ, | ֳ, . | ,. | |||
| 1311.5 | 1413.8 | * | * | ||
| 1820.4 | 2032.7 | * | * | ||
| 1128.8 | 1020.5 | * | * | ||
| 935.4 | 837.4 | * | * | ||
| * | * |
7: : 18. , 
. 䒺 E. , , . E. , 50.
8: : 2.48. : ) ; ) :
|
| x1 | +5x2 | -x3 | =-2 |
| 3x1 | +4x2 | +x3 | =10 | |
| x1 | +3x2 | -2x3 | =-6 |
