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Mathematics
Mathematics
Problem
Evaluate:
∫
−
π
/
2
π
/
2
cos
x
1
+
e
x
d
x
\int_{-\pi/2}^{\pi/2} \frac{\cos x}{1 + e^x} dx
∫
−
π
/2
π
/2
1
+
e
x
cos
x
d
x
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