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.
.
.
1
) .
[ ]. , , x 2.
.
) .
x →2 . [ ]. , .
x = 2 , x 2- 5 x + 6 x 2 - 2 x (x 2) ( ).
) .
[∞-∞].
, , , : . , .
:
.
x → + ∞ , [ ].
x 2:
= .
) .
1, . [1∞].
, .
.
) .
[ ].
, .
=
.
2:
y = f(x) = ,
1) ;
2) ;
3) , .. .
, , .
, , , .
, , , , .
, f (x) , , , .
:
. x = 1, x = 2, . = 1, = 2.
= 1
; f (1-0) = f (1+0) = 3, = 1 .
= 2
; ,
f (2-0) ≠ f (2+0),
= 2 . 1.
|
|
, = f (x) ∞.
, = .
, = b .
, = kx + b .