y=f(x) . 0, ->x0 f(x)=f(x0).
3
- .
(- - ) |
29. . .
f(x) [a, b], (a, b), = (.. , =b (..
( )
(-)
.
30. . , . .
= f(x). , 0. - 0 ( ) 0 . , = - 0, , = 0 + .
, 0 . f f(x) - f(x0) = f(0 + ) f(x0).
f 0, , f, . .
f = f (0+ ) f(x0), f (0 + ) = f(x0) + f.
1)1,2
2)
́. .
31. . ( ). .
- . - .
y=f(x)- 0, - . 0 :
- (-),
1. , - =f(x) .0 , .
:= ( )
- =f(x)- . 0, :
(
- . 0,..
-, .. :
=
2.
- =f(x) .0, .
! 2 ,.. - .