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Integrals
easy
0:00.0
Evaluate
∫
0
π
/
2
2
cos
(
x
)
d
x
\int_0^{\pi/2} 2\cos(x) dx
∫
0
π
/2
2
cos
(
x
)
d
x
.
A
2
2
2
B
1
1
1
C
0
0
0
D
4
4
4
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