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Chuyen de TICH PHAN TUNG PHAN

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x2  1

 

0 2 e 1

1.  x e2 x  3 x  1 dx 1.   x  1 sin 2 xdx  x ln xdx 2.  x3e x dx

2

1.

1 0 1 0





 

3 1



 ln  x  x dx

4 2

x

2.  dx 2. 2

3.   x  2 e x dx *3.  ecos x sin 2 xdx

0

1  cos 2 x 2 0 0







e ln 2 2 2



 x ln xdx  4.  e3 x sin 5 xdx 4.   x  2  ln xdx

2

3. 2

4. x5e x dx

1 0 0 1



2 1 1

x 2e x

5.  x ln 1  x 2 dx 6.   4 x 2  2 x  1 e2 x dx

4

*5.  dx 5.   x  1 cos xdx

 x  2

2

0 0 0 0



ln 1  x 

2 1 2

7.   x  1e dx

4

x

6.  dx 6.  dx 2 x

7.  x sin xdx

0

cos 2 x 1

x2 0 0





 1



1 x

3 2

7.  x ln  x 2  5dx

2 2

1

8.  xe2 x dx 8.   2 x  1 cos 2 xdx 8.  ln dx

0 0 0 0

1 x 2

1 x

2



1 x

1 4 1

9.   x  1 e2 x dx  9.  x ln 10.  e x sin 2  x  dx

2

9. x cos xdx dx

0 0 1 x 0

 



x  sin x

4 e e 3

ln x

10.  xtg xdx 10.   x ln x  dx 11.  11. 

2 2

dx dx

0 1 1

x2 0

cos 2 x

3



x ln x  x 2  1 dx 12. 

1

dx

e

12.  cos(ln x)dx

e

ln x

11. 

0 x2  1 0 1  x  n n

1  xn 1

12. 

1  x  1

2

dx

e

 

2 2 3

x ln x

13.  2 cos 4 xdx x

13.  cos x ln 1  cos x  dx 13.  dx

x  1

2 2

0 0 1



1

14*  1  2 x  e x  x dx

3 2







0



2



 

2 10 4

14.  sin x  sin x dx 2

14.  x lg xdx 2

15.  e dx x

15.  sin  log 2 x dx

0 1 1 1

 

ln  sin x 

3

1  sin x x  ln x 

3 4 2

15.  dx 16.  cos xdx 16.  e dx 16.    dx

 cos x

2

0 0

1  cos x  3 

6



x 2 dx cos 3 x  1

17.  18.  dx

1  x  2 3 3

x 1



ln 1  sin x 

1 cos x



 

4 1

19.  dx 20.  e x sin x  e x x 2 dx

2







0

1  cos x 1









1

 

ln 1  sin x 

4 4 1 cos x 1

1

21.  sin x cos x ln  cos x  dx 22. 

3

dx 23.  dx

0 0

1  cos x 0

1  2x



2

x cos xdx

24. 

 sin 3 x

4

 

e 2 2 e

26.  x3 ln 2 xdx 27.  esin x sin x cos3 xdx 28.  x 2 cos xdx  ( x ln x)

2

2

29. xdx

1 0 0 1

1 

 9

x 1  4 e

ln x

30.   53 x  2 31.   x sin x  dx   x  1

2

5 dx 32. dx

0

sin (2 x  1) 4x 1  0 1/ e

2









1

a

3. Cho hµm sè f(x)=  bxe . T×m a, b biÕt r»ng f’(0)=-22 vµ  f  x dx  5

x



 x  1

3

0

tga cot ga

xdx dx

4. Chøng minh  1 x    1 tga  0  . PhÇn 2: TÝch ph©n hµm chøa dÊu

1

2

1 x(1  x 2 )

e e

gi¸ trÞ tuyÖt ®èi

2 1 5 3 1

x

3.   x  2  x  2 dx 4.  4

1

1.  x  x dx 2.  x x  dx

2

dx 4.  x 2  2 x  1dx

0 0

2 3 1

x  x  12

2

0

2

5.  x 2  x  2 dx

3

1 



2

4x 1 5

x2  6 x  8

e 2

6.  2 dx 7.  dx 8.  ln x dx 9.  sin x dx 10.  cos x sin xdx

0

x  3x  2 1

x 1 1 0



e 2

2

11.  x2   a  1 x  a dx

1

 

3 4 2

12.  tg 2 x  cot g 2 x  2dx 13.  x3  2 x 2  xdx 14.  sin x  cos x dx

 0 0

6

3

2. Cho I=  x2  2 x  m dx a.TÝnh I víi m=1 b.TÝnh I theo m víi

1

m<3

TÝnh chÊt 3: *NÕu hµm f(x) liªn tôc vµ lµ hµm lÎ trªn [-a;a] th×

a



 f  x dx =0

a

a a

*NÕu f(x) liªn tôc vµ ch½n trªn [-a;a] th×  f  x  dx  2 f ( x)dx

a 0

PP: §Æt x=-t

a

f  x a

HÖ qu¶: NÕu f(x) lµ hµm liªn tôc vµ ch½n trªn [-a;a] th×  b x  xdx   f  x dx

a 0

 





  x  cos x

1 1

x4 2 4

sin 2007 x

e x sin x  e2 x 2 dx 2.   

2

1. dx 3. dx 4. dx

1 1

1  2x 4  sin 2 x sin 2006 x  cos 2006 x

 

2 4

 2

sin x

5.  1  3



x

dx



2

 



sin 6 x  cos6 x

1

3

x sin x x 2003 x cos x 4

6.  cos 2 x

dx 7. 

1

2004  2005 x 2006

dx 8. 



1  cos 2 x

dx 9.  2006 x  1

dx 10.

 

3 4

1

2

1 x

 cos x ln 1  xdx

1



2







  1  x2

2 1 1 1

cos x x

11.  dx 12.  dx 13.  ln x 2  a 2  x dx 14.  dx 15.

2006 x  1 1

x 4  x 2  12 1 1

1  2x



2

1

dx

 e

1

x

 1 x 2  1

 





  dx x 2 sin x

1 2 2

sin x sin 2 x cos 5 x

16.  ln x  1  x 17.  18.  19.

5 2

dx dx

1

1 2 x

ex  1

 

2 2





x  

1



 ln x 2  1 dx

2007



1

TC2: NÕu f(x) liªn tôc trªn R vµ f(a+b-x)=f(x) th×

ab

b b



 xf ( x)dx  2  f ( x)dx

a a



CM: §Æt x=a+b-t (tæng 2 cËn trõ ®i biÕn míi)





HÖ qu¶: NÕu f(x) liªn tôc trªn [0;1] th×  xf sin x  dx 

0

2

0

f  sin x dx



PP: §Æt x=-t



   2

1  sin x 

3.  ln 

2

x sin x x sin x

1.  dx 2.  x sin 3 xdx  dx 4.  dx 10.  x cos3 xdx

0

1  sin 2 x 0 0  1  cos x  0

1  cos 2 x 0



7.  x sin x cos 2 xdx

0



 4 2 3

5.  x cos x sin xdx 4 3

6.  ln 1  tgx dx 8.  sin  sin x  nx  dx 11.  sin x sin 2 x sin 3x cos 5 xdx

0 0 0 0

 

9. CMR víi m, n kh¸c nhau thuéc N th×  cos nx cos mxdx 



 sin nx cos mxdx =0











3


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