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Integrals
medium
0:00.0
Evaluate
∫
0
1
1
1
+
x
2
d
x
\int_0^1 \frac{1}{1+x^2} dx
∫
0
1
1
+
x
2
1
d
x
.
A
π
/
4
\pi/4
π
/4
B
π
/
2
\pi/2
π
/2
C
1
1
1
D
0
0
0
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