1. f (x) j (x) 0, f (x) + j (x), f (x) j (x) (j (x 0) 0) , 0.
2. = f (x) 0 f (x 0) > 0, 0, f (x) > 0.
3. = f (u) u 0, u = j (x) u 0 = j (x 0), = f (j (x)) 0.
, f (x) 0, 0 . |
(, ) ( , ). |
,
f (x) , .
f (x) , .
f (x) [ a, b ] f (a) f (b) , (a, b) , f () = 0.
2.29. f (x) = = 1. .
. = 1 f (x) = , f (1), . 2.1.
.2.1. f (x) = .
2.30. = 0
f (x) = .
. = 0 f (x) = , , 0=0, , . (.2.2).
. 2.2. f (x) = .
2.31. = 0
f (x) = . .
. = 0 f (x) = , , 0 0, (. 2.3). , f (0) f (0) = 1, , 0, .
. 2.3
2.32. = 0 f (x) = . .
. = 0 f (x) = , = 0, . 2.4.
. 2.4 f (x) = .
.
0 f (x) , f (x) x 0, , . |
0 f (x) , , . f (x) x 0, , . |
0 f (x) , f (x) x 0, . |
.
|
|
2.29 = 1 . 2.30 = 0 . 2.31 = 0 .
2.33. ?
. . ˳ , .
, = 3 .
2.34. = 0 f (x) = .
. = 0 f (x) = , , . ' : , .
, = 0 .