93
F &=!* < ! , ( !
)< ) .
"#:%! * %!*!! &=!*.
R7 &=f(x) < -
( ( ( ( )! (; b) ! (
0
,f(x
0
)) < !)
&=f(x), f
cc
(x)=0.
!!.
" ! (
0
; f(x
0
)) , < !) , (
0
( ( f
cc
(x) < . 5( ( ( -
< f
cc
(x)=0.
! * %!*!! &=!*.
& &=f(x) (! (-
(; b) ( ! !
0
(; b) ( ( )< .
A( ! ') =
0
< !) .
!!.
& f
cc
(x)<0, x<x
0
i f
cc
(x)>0 >x
0
. A( x<x
0
) , x>x
0
– ) . A !,
! (
0
,f(x
0
)) < !) &=f(x) ( !.
@! ((, 7 f
cc
(x)>0 x<x
0
, f
cc
(x)<0 x>x
0
.
A! ( < !, ( ( ()< ),
' <. A ! ) ! *
.
R7 ( ! ! ! ( =
0
( (
)< ,
0
– ' ! . "( ! ()<
!) !
0
. A! (
0
f(x
0
)) – ! & = f(x).
W' ! ! ( ( ':
1. C ' ! .
2. C ( ( ! ! ( (.
3. 5( ' ! ! ! ( ( !-
.
4. ( ( (
( .
5. 5 .
6. 5! ' ! '! (.
:
5! !
& =
4
+2
3
–12
2
–5+2.
?;’;!!:
1. "') ! < ( !, ' R.
2. C( ( ( ! ! ( (:
&c=4
3
+6
2
–24–5; &
cc
= 12
2
+12–24; &cc= 12(
2
+–2); &cc=0
2
+–2=0
.1,2;
2
31
2
811
212,1
r
r
xx
3. 5( ! ! ( ( = –2 = 1 ! , (
').
5. G. &" / 6&!*/