Интегрирование рациональных функций
1.Дробь правильная.
2.Дробь неправильная: x2+x5 = 2 − x10+ 5 .
3. Дробь неправильная: |
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7x2 +1 |
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x2 −1 |
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4. Дробь правильная. |
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5. Дробь неправильная: |
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x2 |
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= x −3 + |
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6. Дробь неправильная: |
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x5 − 4x3 |
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− 4x −5 + |
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5 − x |
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x2 − x +1 |
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x2 − x + |
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1 ln |
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7. − |
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+C . |
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8. |
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3x +5 |
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+C . |
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4x − |
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9. 5arctg (2x + 3)+ C . |
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x − 4 |
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10. −ln |
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2x2 −3x − 2 |
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+ C . |
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11. |
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1 ln |
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x2 −7x +12 |
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3 ln |
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+ C . |
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x −3 |
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x − |
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35 ln |
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3 ln |
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12. |
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+ C . |
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x +1 |
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12 |
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4 |
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A |
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+ Cx + D . |
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13. |
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C |
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D |
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14. |
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(x |
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x −1 |
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x −1 |
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x2 + 2 |
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15. |
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B |
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Cx + D |
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16. |
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+ Cx + D . |
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x −1 |
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(x −1)2 |
x2 + x +1 |
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x −3 |
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x2 +9 |
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17. |
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Cx + D |
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18. |
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+ Cx + D + |
Ex + F |
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x −1 |
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x2 −5x + 7 |
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x x2 |
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x2 + 4 |
(x2 + 4)2 |
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Cx + D |
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x +1 |
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x2 − x + |
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20. |
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C |
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Dx + E |
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Fx +G |
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x − 2 |
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(x + 2)2 |
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x2 + 4 |
x2 − 2x + 4 |
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21. |
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Cx + D |
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Ex + F |
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x2 |
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4x2 + 4x + 7 |
(4x2 + 4x + 7)2 |
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22. |
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x + 2 |
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+ C . |
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23. |
2 |
ln |
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2x + |
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+C . |
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24. |
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x3 |
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+ 4x + 2ln |
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x |
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+ 7 ln |
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x − 2 |
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+3ln |
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x + 2 |
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+C . |
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25. |
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1 ln |
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− |
5 ln |
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x − |
2 |
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+10 ln |
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x − |
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+C . |
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6 |
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26. |
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−3ln |
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+ C . |
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x −1 |
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27. |
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x + 2 |
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28. |
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1 ln |
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+C . |
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29.− x 1+3 + 14 ln xx +−53 +C .
30.−3ln x + 32 ln x2 − 2x +5 + 2arctg x 2−1 +C .
31. |
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+C . |
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32. |
1 |
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arctg x +C . |
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33. |
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− 6 ln (x |
+ x +1)− |
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arctg |
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+ C . |
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34. |
4ln |
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35. |
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+C . |
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x − 2 |
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Метод рационализации: интегрирование функций, рационально зависящих от тригонометрических
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4 tg |
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arctg |
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arctg |
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3. |
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+C . |
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4. |
ln |
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2 arctg |
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+C . |
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6. ln |
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+C . |
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7. |
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+C . |
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1 +3cos x |
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9. |
sin3 |
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− |
sin5 |
x |
+C . |
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11. |
1 |
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arctg ( |
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2 tg x)+ C . |
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13. |
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1 arcctg (2ctg x)+C . |
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15. |
− |
ctg3 x |
− |
ctg5 x |
+C . |
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17. 16 sin 3x + 18 sin 4x +C .
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8. sin x − |
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ln |
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3 +sin x |
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+C . |
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3 −sin x |
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10. |
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2 tg3 |
x +C . |
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12. |
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sin4 2x |
− |
sin6 2x |
+ C . |
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8 |
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12 |
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14. |
− |
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arctg( |
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5 cos x)+C . |
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16. |
− |
1 cos 2x − |
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cos8x +C . |
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16 |
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18. |
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1 |
sin 5x − |
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sin11x +C . |
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22 |
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19. −cos x + |
2 cos3 |
x − cos5 x |
+C . |
20. |
3 x + |
1 sin 4x + |
1 |
sin8x +C . |
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64 |
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8 |
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21. 161 x − 641 sin 4x −1921 sin 6x + 481 sin3 2x +C .
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22. |
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tg3 |
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−3tg |
x |
+ x +C . |
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24. |
− |
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+C . |
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5sin5 |
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3sin3 x |
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26. |
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2 tg x +3 − |
13 |
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+C . |
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28. |
ln |
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cos x +sin x |
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+C . |
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23. 14 ln (1 + 2 tg2 x)+C .
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25. |
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tg x − |
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+C . |
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tg x |
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3tg3 |
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27. |
2ln |
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− x +C . |
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29. |
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1 |
arctg tg 2x |
+ C . |
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Метод рационализации: интегрирование простейших иррациональностей
1. ln x + 3 + x2 + 6x + 5 + C . |
2. ln x − 2 + x2 − 4x + 9 +C . |
3. arcsin (x −1)+C .
4. 3 x2 + 2x + 2 − 2ln x +1 + x2 + 2x + 2 + C .
5. |
5 x2 − x +1 + 11ln |
x − |
1 |
+ x2 − x +1 |
+ C . |
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2 |
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6. |
x +3 −5)2 +50ln |
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x + 3 |
+5 |
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+C . |
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7. |
2 |
(2 + x )9 −(2 + x )8 |
+ |
8 |
(2 + x )7 + C . |
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8.33 x +12 6 x + 24ln 6 x − 2 + C .
9.−12 3 (1−3x)2 − 2 3 1−3x − 4ln 3 1−3x − 2 +C .
10.2(4 x − 2)2 +16 ln 4 x + 2 + C .
11. − |
2 |
− |
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3 |
− |
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18 |
+ C . |
3( x −3)3 |
( |
x −3)4 |
5( |
x −3)5 |
12.1003 3 (5x − 2)4 + 256 3 5x − 2 + C .
13.32 3 x2 − 2 x +33 x + 6 6 x −6ln (6 x +1)+C .
14. |
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2 |
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(3x −1)3 |
− 91 (3x −1)+ 109 |
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3x −1 −109 ln ( |
3x −1 +1)+ C . |
27 |
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15. |
− |
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+C . |
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2 + x |
(2 + |
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x )2 |
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16. |
−ctg arcsin x −arcsin x +C = − |
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1 − x2 |
−arcsin x +C . |
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x |
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17. |
− |
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+ C = − |
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+ C . |
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3sin3 arctg x |
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3x3 |
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arctg |
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19. −1 |
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18. |
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ln |
tg |
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5 |
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+C . |
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+C . |
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+ x2 |
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20. |
x |
5 − x2 + |
5 arcsin |
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2 |
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2 |
22. x = asin t .
25. x = asin t .
23. x = sina t .
26. x = a tgt .
1 |
− x2 |
−arcsin x +C. |
x |
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24. x = a tgt . |