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Evaluation of definite integrals
Question
∫
0
1
x
e
x
x
+
1
2
d
x
Moderate
A
e
2
B
e
−
1
2
C
e
2
−
1
D
e
−
3
2
Solution
G.
I
=
∫
0
1
(
x
+
1
)
−
1
(
x
+
1
)
2
e
x
d
x
=
∫
0
1
1
x
+
1
−
1
(
x
+
1
)
2
e
x
d
x
=
e
x
x
+
1
0
1
=
e
2
−
1
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