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Mathematics
Mathematics
Problem
Calculate
∫
0
π
/
4
(
sec
2
θ
−
2
)
d
θ
\displaystyle\int_{0}^{\pi/4} \left(\sec^{2}\theta-2\right)\,d\theta
∫
0
π
/4
(
sec
2
θ
−
2
)
d
θ
.
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