Exercicis d'integració indefinida solucions - IES LA Asunción
Exercicis d'integració indefinida solucions - IES LA Asunción Exercicis d'integració indefinida solucions - IES LA Asunción
Exercicis d’integració indefinida solucions
- Page 2 and 3: Exercicis nivell 1 IES L’Assumpci
- Page 4 and 5: Exercicis nivell 1 IES L’Assumpci
- Page 6 and 7: Exercicis nivell 1 IES L’Assumpci
- Page 8 and 9: Exercicis nivell 1 IES L’Assumpci
- Page 10: Exercicis nivell 1 IES L’Assumpci
<strong>Exercicis</strong><br />
d’integració <strong>indefinida</strong><br />
<strong>solucions</strong>
<strong>Exercicis</strong> nivell 1 <strong>IES</strong> L’Assumpció<br />
1. ∫ dx 2 = 2x+C<br />
2. 8 x dx = 4x ∫ 2 +C<br />
1<br />
3. x dx = 1/10 x ∫ 5<br />
2 +C<br />
4. x dx ∫ 2<br />
pàgina 2<br />
= 1/3 x 3 +C<br />
5. 7x dx ∫ 3<br />
= 7/4 x 4 +C<br />
1<br />
6. dx ∫ 2x<br />
=<br />
1<br />
7. dx = ∫ 4<br />
x<br />
8. x dx = ∫<br />
1<br />
9. dx ∫ 2 x<br />
3 2<br />
=<br />
10. 5 x dx = ∫<br />
1<br />
11. dx ∫ 5 3<br />
x<br />
4 3<br />
12. x dx ∫<br />
∫<br />
13. ( x 2x − 6x<br />
+ 1)<br />
3 6<br />
=<br />
=<br />
3<br />
14. ( x x )<br />
+ dx =<br />
+ dx = ∫<br />
⎛ 2 1 3 ⎞<br />
15. ⎜ x + + x ⎟ dx = ∫ 4<br />
⎝ x ⎠<br />
16. ∫ ⎟ ⎛ 3 1 ⎞<br />
⎜ x + dx =<br />
5<br />
⎝ x ⎠<br />
⎛ 3 2 1 ⎞<br />
17. ⎜ x + x ⎟ dx = ∫ ⎝ 5 7 ⎠<br />
2<br />
+ 2 dx = ∫<br />
18. ( x )<br />
2 3<br />
7 5 3<br />
+ 1 dx = 1/7 x +3/5 x + x + x + C<br />
∫<br />
19. ( x )<br />
⎛ 1 1 ⎞<br />
20. ⎜ − ⎟ dx =<br />
∫ 4 2<br />
⎝ x x ⎠
4<br />
21. dx = ∫ 3 2<br />
3 x<br />
22. ∫ ⎟ ⎛ 1 ⎞<br />
⎜ x − dx =<br />
⎝ x ⎠<br />
1<br />
23. dx ∫ 3<br />
x<br />
6<br />
24. ( x )<br />
=<br />
2<br />
+ 8 dx = ∫<br />
25. 2 x dx = ∫<br />
26. 2 x + 3 dx = ∫<br />
27. ∫ + x 6<br />
dx =<br />
5<br />
28. x dx ∫ 2<br />
6 =<br />
2<br />
29. x − 2x<br />
− 1 dx = ∫<br />
⎛ x ⎞<br />
30. ⎜4x<br />
− ⎟dx ∫ ⎝ 3 ⎠<br />
2<br />
=<br />
31. x dx ∫ 2 3<br />
=<br />
7<br />
32. ∫ x3 dx =<br />
33. ∫ 4x3 dx =<br />
34. ∫ x2 +x 3 dx =<br />
35. ∫ x3 –2x+5 dx =<br />
36. ∫ 2x4 +2x dx =<br />
37. ∫ x3 –2x 2 dx =<br />
38. ∫ x3 –3x+1dx =<br />
39. ∫ 3x3 –2x 7 dx =<br />
40. ∫ x4 -x 3 –1 dx =<br />
Departament de Matemàtiques<br />
pàgina 3
<strong>Exercicis</strong> nivell 1 <strong>IES</strong> L’Assumpció<br />
41. ∫ x5 -4x 3 dx = 1/6 x 6 – x 4 + C<br />
42. ∫ x4 –5x dx =<br />
43. ∫ 6x5 dx =<br />
44. ∫ x7 dx =<br />
45. ∫ x7 +8 dx =<br />
46. ∫ x8 dx =<br />
47. ∫<br />
48. ∫<br />
49. ∫<br />
pàgina 4<br />
sin(x) dx =<br />
cos(x) dx =<br />
sin(5x) dx = -1/5 cos(5x) + C<br />
50. ∫ sin(x) cos(x) dx = ½ sin2 (x) + C<br />
51. ∫ 3x dx = 1/ln(3) 3 x + C<br />
52. ∫<br />
53. ∫<br />
54. ∫<br />
tan(x) dx = -1 ln| cos(x) | +C<br />
cotan(x) dx = ln| sin(x) | +C<br />
sin(8x) dx = -1/8 cos(8x) +C<br />
55. ∫ (x2 +1) 4 dx =<br />
56. ∫ (x3 +1) 3 dx =<br />
57. ∫ (x-1)3 dx = 1/4 (x-1) 4 +C<br />
58. ∫ (x-1)2 dx = 1/3 (x-1) 3 +C<br />
59. ∫ (2x+1)6 dx = 1/14 (2x+1) 7 + C<br />
60. ∫ (x+2)4 dx = 1/5 (x+2) 5 +C<br />
61. ∫ x31 dx = 1/32 x 32 +C
62. dx ∫ x 2<br />
6<br />
=<br />
63. dx ∫ x 3<br />
8<br />
=<br />
64. dx ∫ x 5<br />
4<br />
=<br />
65. dx ∫ x 6<br />
3<br />
5<br />
66. dx ∫ x 2<br />
3<br />
=<br />
1<br />
67. dx ∫ x<br />
=<br />
=<br />
68. ∫ + dx<br />
1<br />
2 x 1<br />
⎛ 3 2 7 ⎞<br />
69. ⎜3<br />
x − x + + ⎟dx = ∫ ⎝ x 2<br />
x ⎠<br />
=<br />
3<br />
x − 2x<br />
+ 1<br />
70. dx = ∫ x<br />
3 5 2<br />
71. x x dx = ∫<br />
72. ∫ + dx<br />
x<br />
x 7<br />
73. ∫ − dx<br />
2x<br />
7x<br />
3<br />
74. ∫ 1−<br />
9<br />
2 = ½ ln| (x 2 + 7) | +C<br />
2 = 1/7 ln| (7x 2 - 3) | +C<br />
1<br />
x 2<br />
75. ∫ − dx<br />
2x<br />
=<br />
7x<br />
3<br />
76. x dx ∫ 3<br />
=<br />
77. dx ∫ x 3<br />
1<br />
=<br />
78. x x dx ∫ 3<br />
1<br />
79. dx ∫ 3<br />
x<br />
⎛ 2 4 1 2 ⎞<br />
80. ⎜ x − x + 1⎟dx<br />
=<br />
∫ ⎝ 3 2 ⎠<br />
=<br />
dx = 1/3 arcsin(3x) +C<br />
=<br />
Departament de Matemàtiques<br />
pàgina 5
<strong>Exercicis</strong> nivell 1 <strong>IES</strong> L’Assumpció<br />
⎛ 2 3 3 2 ⎞<br />
81. ⎜ x − x − ⎟dx =<br />
∫ ⎝ 3 4 3 ⎠<br />
⎛ 3 1 2 ⎞<br />
82. ⎜−<br />
− + ⎟dx = ∫ 4 3 5<br />
⎝ x x x ⎠<br />
83. x − 3x<br />
+ 4 dx = ∫<br />
pàgina 6<br />
2<br />
3<br />
2x<br />
+ 2x<br />
+ 1<br />
84. dx ∫ 2<br />
1+<br />
x<br />
x −1 85. dx = ∫ x + 1<br />
x<br />
86. ∫<br />
4<br />
− 5x<br />
x<br />
87. ( a x )<br />
2<br />
2<br />
+ 10<br />
dx =<br />
2<br />
− dx = ∫<br />
2<br />
− dx = ∫<br />
88. x ( a x )<br />
x<br />
89. 10 dx = ∫<br />
90. ∫ ⎟ ⎛ 1 ⎞<br />
⎜ x + dx =<br />
⎝ x ⎠<br />
1<br />
91. dx ∫ 2<br />
sin ( x)<br />
cos ( x)<br />
2<br />
= x 2 + arctan(x) +C<br />
2 = tan(x) – cotan(x) + C<br />
2<br />
92. tan ( x)<br />
dx = tan(x) – x + C<br />
∫<br />
2<br />
3cos(<br />
x)<br />
+ 2 − 2sin<br />
( x)<br />
93. dx = 3x + 2 sin(x) + C<br />
∫ cos( x)<br />
∫<br />
( a + x )<br />
94.<br />
3<br />
x<br />
2<br />
dx =<br />
x − 6x<br />
+ 5<br />
95. dx ∫ x − 2<br />
= 1/3 x 3 + x 2 – 2x + ln| x – 2 | + C<br />
⎛ sin(<br />
2x)<br />
⎞<br />
96. ⎜<br />
+ cos( x)<br />
⎟dx<br />
= 2x + sin(x) + C<br />
∫ ⎝ sin(<br />
x)<br />
cos( x)<br />
⎠<br />
5<br />
4 − dx = ∫<br />
97. ( x 2)<br />
+ dx = ∫<br />
98. x( 3x 1)<br />
2<br />
2x<br />
+ 1<br />
99. dx ∫ x + x − 3<br />
∫<br />
2 =<br />
3 2<br />
2<br />
100. ( x 5x<br />
+ 4x<br />
)( 3x<br />
−10x<br />
+ 4)<br />
− dx =
101. 2 x 1+<br />
3x<br />
dx = ∫<br />
2x<br />
102. ∫ 8 + x<br />
2<br />
2<br />
dx =<br />
103. ( x + 3)(<br />
x + 6x<br />
− 4)<br />
dx = ∫<br />
2<br />
104. ( x + 3)<br />
sin(<br />
x + 6x<br />
− 4)<br />
dx =<br />
∫<br />
2<br />
2<br />
105. x x −1 dx = 2/3 (x ∫ 2 -1) 3/2 +C<br />
106. x sin x ) dx = ∫<br />
( 2<br />
1<br />
107. dx = ∫ 2<br />
x cos ( x )<br />
x<br />
108. dx = ∫ ( x + 1)(<br />
x −1)<br />
109. ∫ − dx<br />
1<br />
7x<br />
2<br />
arcsin(<br />
x)<br />
110. dx ∫ 2<br />
1−<br />
x<br />
=<br />
111. x x + 1 dx = ∫<br />
5 2<br />
ln( x)<br />
112. dx = ∫ x<br />
1<br />
113. ∫ ( x −1<br />
2<br />
)<br />
1<br />
114. ∫ ( 1+<br />
x)<br />
dx =<br />
dx =<br />
x<br />
x<br />
115. dx ∫ 5x + 7<br />
3<br />
=<br />
( x)<br />
116. dx = ∫ x<br />
ln 3<br />
3<br />
2<br />
6x<br />
−11x<br />
−19x<br />
− 7<br />
117. dx =<br />
∫ 3x<br />
+ 2<br />
2<br />
= ½ arcsin 2 (x) + C<br />
118. ∫ − dx<br />
x<br />
= 8 ln(x<br />
x 2<br />
1/2 –2) +x+4x 1/2<br />
3<br />
119. ∫ 1+<br />
x<br />
3 2<br />
x<br />
dx = ½ [3x 2/3 – 3 ln(x 2/3 +1)]<br />
Departament de Matemàtiques<br />
pàgina 7
<strong>Exercicis</strong> nivell 1 <strong>IES</strong> L’Assumpció<br />
120. ( e − 3e<br />
+ 4e<br />
) dx = ∫<br />
pàgina 8<br />
x<br />
3<br />
2x<br />
3x<br />
121. sin ( 3x)<br />
cos( 3x)<br />
dx = ∫<br />
122. ∫ + dx<br />
e<br />
=<br />
x<br />
e 2<br />
123. ∫ + dx<br />
e<br />
=<br />
x<br />
e 1<br />
124. ∫ + dx<br />
e<br />
x<br />
e 1<br />
x<br />
x<br />
x<br />
2 =<br />
2x<br />
125. dx = ∫ 1+<br />
x<br />
∫<br />
∫<br />
∫<br />
126. 2 3 3<br />
x (3 x +14) dx =<br />
5<br />
127. 5x + 6 dx<br />
=<br />
2 3/7<br />
128. (x +1) x dx<br />
129.<br />
8 x<br />
x dx<br />
ln<br />
= ∫<br />
∫<br />
=<br />
1<br />
36 (3 3<br />
x +14)<br />
1<br />
6<br />
5<br />
4 +C<br />
(5x + 6 )6 +C<br />
7<br />
20 (x<br />
2 +1)<br />
1<br />
9<br />
10/7 +C<br />
9 ( ln x) +C<br />
130.<br />
17x<br />
dx =<br />
3 2 6 x +8<br />
51<br />
24 6 3 2<br />
x +8+C<br />
131. x 3 x (e +1) e dx = ∫ 1<br />
4 (e<br />
x 4<br />
+1) +C<br />
132.<br />
∫<br />
∫<br />
3<br />
sin2x<br />
dx =<br />
2 5+ sin x<br />
3<br />
5<br />
2<br />
(5 + sin x )<br />
133.<br />
dx<br />
dx =<br />
4<br />
(3x + 1)<br />
1 1<br />
+C<br />
9<br />
3<br />
(3x + 1)<br />
134. sin(x)<br />
cos(x) e dx = ∫ e sin(x) +C<br />
135.<br />
arctgx<br />
4<br />
2 1+ x dx = ∫ 1/ln(4) 4 arctan(x) +C<br />
136.<br />
137.<br />
3<br />
x<br />
e<br />
dx =<br />
2 ∫ x3<br />
3 e x^1/3 +C<br />
x<br />
5<br />
x dx = ∫ 2/ln(5) 5 x^1/2 +C<br />
138. sin(3x)<br />
cos(3x) e dx = ∫ 1/3 e sin(3x) +C<br />
139.<br />
1 1<br />
x x dx<br />
2 tan⎛<br />
⎞<br />
⎜ ⎟ = ∫ ⎝ ⎠<br />
ln| cos(1/x) | +C<br />
2/3<br />
+C
140.<br />
141.<br />
142.<br />
x<br />
e<br />
x 1+ e dx = ∫ ln| 1+e x | +C<br />
4x<br />
e<br />
4x 1+ e dx = ∫ 1/4 ln| 1+e 4x | +C<br />
dx<br />
= ln| tan(x/2) | +C<br />
∫ sin x<br />
27 x +30x+3<br />
3 x +5x +x 1 dx<br />
2<br />
143. ∫ 3 2 −<br />
= 3 ln| 3x 3 +5x 2 +x-1 | +C<br />
144.<br />
1<br />
(<br />
x<br />
1<br />
cos ) dx =<br />
3 2 ∫ x<br />
1/2 sin(1/x 2 ) +C<br />
145. 3 4<br />
x cos(2<br />
x +1) dx=<br />
∫ 1/8 sin(2x 4 +1) +C<br />
146. 2x 2x<br />
3 sin(1+<br />
3 ) dx = ∫ 1/2ln(3) cos(1+3 2x ) +C<br />
147. ∫<br />
dx<br />
=<br />
2 x cos ( x)<br />
2 tan(x 1/2 ) +C<br />
x<br />
e dx<br />
2 x<br />
= tan(e x ) +C<br />
148. ∫ cos ( e )<br />
149.<br />
dx<br />
=<br />
2 ∫ x sin (1+ ln x)<br />
cotan(1+ln(x)) +C<br />
150. ∫<br />
2<br />
x dx<br />
=<br />
6 1− x<br />
1/3 arcsin(x 3 ) +C<br />
151.<br />
dx<br />
4 x 2 ∫ =<br />
−<br />
arcsin(x/2 ) +C<br />
152.<br />
dx<br />
4x x 2 ∫ =<br />
−<br />
arcsin( (x+2)/2 ) +C<br />
153.<br />
dx<br />
20 + 8x x 2 ∫ =<br />
−<br />
arcsin( (x-4)/6 ) +C<br />
154.<br />
dx<br />
58 x 3 x 2 ∫ =<br />
− −<br />
3 1/2 /3 arcsin( (6x+1)/697 1/2 ) +C<br />
155.<br />
x<br />
e dx<br />
=<br />
2x ∫ 1+ e<br />
arctan(1+e x ) +C<br />
156.<br />
arctg( x)<br />
dx =<br />
2 ∫ 1+<br />
x<br />
1 2<br />
arctg ( x) + C<br />
2<br />
157.<br />
tan x<br />
x dx<br />
( )<br />
=<br />
2 ∫ cos ( )<br />
2<br />
3<br />
3<br />
tan ( x) + C<br />
158.<br />
3<br />
∫<br />
ln ( sin( x)<br />
)<br />
dx =<br />
2tan(<br />
x)<br />
3<br />
ln ( sin( x)) + C<br />
159.<br />
3<br />
cos( x) sen ( x) dx=<br />
∫<br />
1 4<br />
sen ( x ) +C<br />
4<br />
Departament de Matemàtiques<br />
pàgina 9
<strong>Exercicis</strong> nivell 1 <strong>IES</strong> L’Assumpció<br />
160.<br />
∫<br />
pàgina 10<br />
x + 3<br />
2 ( x + 6x)<br />
1 3<br />
dx<br />
3 2<br />
= ( x 6x)<br />
4<br />
2<br />
3<br />
+ +C<br />
161. ∫<br />
2 4<br />
x − 2x<br />
dx =<br />
1<br />
− ( − ) 6 1 2 2 3 2<br />
x +C<br />
162.<br />
( ) dx<br />
− 4<br />
=<br />
3 ∫ 2x<br />
+ 3<br />
(2x+3) -2 +C<br />
163.<br />
− 4x<br />
3 ∫ 2<br />
x + 3<br />
= (x 2 +3) -2 +C<br />
164.<br />
( ) dx<br />
− 2x<br />
∫ +<br />
( ) dx<br />
2 2<br />
x 3<br />
= (x 2 +3) -1 +C<br />
3<br />
165. dx = arcsin[(3x+4)/3 ∫ 2<br />
− 9x<br />
− 24x<br />
−13<br />
1/2 ] +C<br />
166.<br />
1<br />
∫ +<br />
( ) dx<br />
2<br />
1 x<br />
= -(1+x) -1 +C