. 9.2
, (. 9.2).
x2 >x1 (, x2 >x1 ) D x = x2 - x1 ,
. ( ).
, - . D x = x/x , x - .
. 9.3
.
(, ). . (.9.4). . : , ("")
w 0 - , m - , - .
, . 9.4
D x = x - x - .
9.4 |
. 9.5 - . , , . . 1 2 . ( 3): , - .
. 9.5
[ 9.1, 9.2 ] [ 9.3, 9.4 ].