. .
, .
: ( ), f(x)
s , .
F(x)
- , , s - ,
s. f(x). f(x) .
f(x):
1. f(x) .
2. f{x) , . . f(x}>0.
3. f(x) || , . . .
4. f{x) = a ,
5. f(x) = .
6. = + s ,
f(x).
, . . .
. , ( ) , .
s . , f(x) , . , , 1, , s =.
f(x) F(x) . , s =0, s = 1.
f(x) =0, s =1 :
:
(a, b) :
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.
[1] 29-99 .
[2] 8.009-84
[3] 8.401-80 . .
[4] 8.050-73
[5] . . : .\: . .: , 2002 800.
[6] . . . 1 . .: -, 2004. - 288 .