n xn,
x 1, x 2, x 3, , xn, (1)
.
xi (i = 1, 2, 3, , n, ) , xn , n .
, xn xn = n 2. n = 1, 2, 3, , 1, 4, 9, .
X Y , f . , X Y. : y = f (x). X . : D (f).
, x 0, x 0.
. (x 0 ; x 0 + ) - x 0.
. y = f (x) - x 0 , , x 0. , , , , , , , B x 0. : .
f (x) , , , , . : .
, . , .
, (). , 0, () 0. : .
0 = f (x) .
y = f (x) 0, (. 10).
. 10 |
y = f (x) 0, 0 , . . .
f (x) , .
, , .
:
1. = , const.
2. = , .
3. = (0 < a 1).
4. .
5. y = sin x, y = cos x, y = tg x,
y = ctg x.
6. y = arcsin x, y = arccos x,
y = arctg x, y = arcctg x.
|
|
, , , .
.
f (x) = arcsin (log5(x 2 + 1)), f (x) = , f (x) = .
D (y) y = f (x) , .
. y = f (x), = f (x 0).
, .
1. y = f (x) 0 .
2. , . . .
3. f 1(x) f 2(x) , : , .
:
3.1. , , . .
= .
3.2. , :
= .
3.3. 0, , , . .
, , .
g (x) (),
.
f (x) (), > 0 , , (), . : ().
f (x) f (x) () ,
.
( )
g (x) (), ().
f (x) (), ().
.
().
(2)
(2) , . :
1. , , = .
2. = 1, = , (2) .
(2) .