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17)
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UV V ,
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(; ) U.
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P Q , n , m . .1. n , , .
, , : : - ; - ; .2. n<m, . , , . , , .
.
I.
II.
m n - :
III. m n - , ( m = 2k + 1)
:
IV. dx
: tgx=t ctgx=t
= = = = = + C = - + C
V. .
sinx = , cosx = , = t
dx = = = t+C = tg +C
VI.
,
(2) sinxdx = tgx = =
I = I +
2I = +
I = +
.
I. , a: ax+b-
:
dx = = = dt = 2 dt = 2 - 2 = 2t 2arc + C = 2 - 2arctg +C
II. , :
, : , dx = -
:
= = = = - = - = - = -
.
III. )dx
: x=a sint, dx=a costdt
:
= = = = dt = = tg(arcsin ) + C
IV. )dx
: x=a tgt, dx =
V. )dx
: x= , dx= - dt
.
( ), .
|
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n , 0x: , , , , ,
h+ h+ = (f()+2 + ++2f()+2f()) =
.
1. f(x) g(x) - , [a, b], :
dx = ,
. . .
2. f(x) - , c - , :
dx=c ,
. . .
3. f(x) [a, b]. c [a, c] [c, b], , . .
= + , (a<c<b).
4. f(x) - , :
.
, . ( ): f(x) [a,b] (a,b), c, (a,b), , f(b) f(a) = (b-a) (c).
: f(x) [a,b], a (x) , c (a,b) ,
= f(c)
, =1,
=f(c)(b-a)
f(x) [a,b] :
=
.
-.
y = f(x) [a; b] F(x) - , =F(b)-F(a) - .
- . :
, ( ), , -.
: