, , () , - . , - .
, , .
2.10 , ) .
.
. 2.10
1. , 䒺 , , . , .
2 ( ). , .
, , , ( , ) 2- . |
2.52. = ln(4 + 2).
. :
¢¢ = 0 = 2. , ( 2- ). 2- . = 2, ( 2). = 2 ¢¢ , = 2 .
. , (+2, ln 8), (-2, ln 8) = ln(4 + 2).
2
x | (-¥; -2) | - 2 | (-2; 2) | (2; ¥) | |
¢¢ | - | + | - | ||
, . (- ¥, -2), (2, ¥) (¢¢ < 0), (-2, 2) (¢¢ > 0).
, . , = f(x), , ( 2.11).
. 2.11.
, .
1. 0 = , = .
2. , .
3. г - :
y = kx+ b. (2.20)
= f(x), k b :
|
|
. (2.21)
, , .
. , . , k = 0.
2.53. .
. =1. , :
.
.
, .
= kx+ b.
k
.
: . . г .