y=f(x) (a; b), .
y=f(x) (a; b), .
. y=f(x) (a; b). (a; b) y = f(x), .. f ''(x) < 0, , f''(x) > 0 .
.
, .
. , , .
f(x0 0) = ∞, f (x0 0) = + ∞, f (x0 0) = − ∞.
, . , . 8.2
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= b y = f (x) ( , , - ).
y = f (x)
. . .
- , - - .
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F() + f() . = 1 1 = F() + 1, ; . = 2, .
. - .
1. , ,
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7.