18: :
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-31 27 :
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 .
27 | x=k x=a; x>a; . |
: 27
: , 25% ; , 25% ; , 100% . : 5000 ., 4500 ., 6000 ., 5600 .
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- | , | - | - | . | . | |||
, | , | , | - | - | ³' | |||
. | . | . | ||||||
4.0 | 5.0 | * | * | * | * | |||
4.0 | 3.5 | * | * | * | * | |||
3.0 | 2.5 | * | * | * | * | |||
3.0 | 3.5 | * | * | * | * | |||
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7: : 39. , . C , 䒺 . 䒺 , 8, 7,5. , C . .
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x1 | +2x2 | -x3 | =5 | |
2x1 | -x2 | +x3 | =-1 | |
2x1 | -3x2 | -x3 | =1 |