IV.
1. F(x) f(x) , dF(x) = f(x) dx.
F(x) - f(x), F(x) + C, C , f(x), .
2. F(x) - f(x), F(x) + C, , f(x) .
.
f(x) , f(x) dx , x - .
1. .
2. d .
3. .
4. , a = const.
5. .
1. 2. (a ¹ -1)
3. (x ¹ 0) 4.
5. 6.
7. 8.
9. 10.
11. = arctgx + C 12.
13. 14.
1. .
1.
. 4 5 ,
.
2.
. , . 1 = sin2x + cos2x,
= .
5,
8 9.
3.
. . 3 , 3dx = d(3x),
.
7 3x
.
4.
. , , cos x dx = sin x , 2
5.
. , dx = d(1 + x),
.
6.
. x dx = ,
.
7.
. 1 + 2x2 = (1 + x2) + x2,
= .
2 11
( )
:
1) x = j(t), j(t) - t.
;
2) u = y(x), u . :
.
8.
. t = , . . x = t3. , , . dx = = 3t2dt.
|
|
.
x. t = ,
.
9.
. x3+ 5 = t, 3x2dx = dt, x2dx =
.
, ax + b = t.
10.
. ax + b = t, dx = dt, dx = .
11. .
. cos2x = t, 2 cos x sin x dx = dt, . . sin 2x dx = -dt.
= -arcsin .
12. .
. ,
x4+ 2x2+ 5 = (x2+ 1)2+ 4. x2+ 1 = t, xdx = .
.