1 Integration Z - McGill University
[Pages:2]1 Integration
Evaluate the integral.
1. 4(1 + x)2dx
1
2
2.
x2 - x dx
0
(x-1 + x)2
3.
x2 dx
2
4. x2dx
0
x3 - 3x + 5
5.
dx
3x
0
6. (x2 - 4)2dx
-2
7.
10x4
-
1 x3
+
15 x3
-
7
dx
8.
2 1
2x3
+
5 x4
dx
9.
(2x
+
1)(x
-
1)
dx
x
3x5 + 6
10.
2x3 dx
1
11. (2t + 3t2)dt
0
9
12. x + x dx
1
13.
8 1
6x2
-
3x
+
2 x3
dx
14.
2x
-
1 x2
+
ex
dx
13
12
1
15.
+
-
dx
x
x
x
16. 3x2 -2x + 5 dx 4x
17. (2x3 - 1)(x2 + 5)dx
(3x - 2)2
18.
dx
4x
3 21
19.
3x
-
x3
+
3x
dx
2
20. (2x2 + x - 1)dx
1
2y4 + 1
21.
3y3 dy
22.
x+1
-
1 x
+
1 x2
+ sin x
- ex
dx
4
23. x + 2 x + 1 + dx
x
24. tan2 xdx
sin x 25. cos2 x dx
/4
26.
sec2 xdx
0
27. sin xdx
0
28. cos xdx
0
1
29.
dx
1 + sin x
cot x
30.
dx
sin x
31.
dx
sec x
3 32. 1 - cos2 x dx
-1 33. cos2 x dx
1
Answers:
1.
119 6
2.
2 3
12 3. - 3x3 - x + x + C
4.
8 3
5. 3 x11/3 - 9 x5/3 + 15 x2/3 + C
11
5
2
6.
256 15
7.
2x5 +
1 2x2
+ 6x5/2 - 7x + C
8.
215 24
4x5/2 2x3/2
9.
-
-2 x+C
5
3
x3 3 10. 2 - 2x2 + C
11. 2
12.
172 3
13.
64751 64
14. 4x3/2 + 1 + ex + C 3x
11 15. - 2x2 - x - ln |x| + C
12x11/4 8x7/4 20x3/4
16.
-
+
+C
11
7
3
x6 5x4 x3 17. + - - 5x + C
323
9x2 18. - 3x + ln |x| + C
8
9x2/3 1 ln |x| 19. 2 + x2 + 3 + C
20.
31 6
21.
1 3
y2
-
1 6y2
+C
22. 2 x3/2 + x - ln |x| - 1 - cos x - ex + C
3
x
23.
x2
+
4 x3/2
+
x+8 x
+C
23
24. tan x - x + C
25. sec x + C
26. 1 27. 2 28. 0 29. tan x - sec x + C [Hint: Multiply numerator
and denominator by 1 - sin x.] 30. - csc x + C 31. sin x + C 32. -3 cot x + C 33. - tan x + C
2
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