definite-integral

Question: $\int_{0}^{\pi /8}{\frac{{{\sec }^{2}}2x}{2}\,dx=}$



1) $\frac{1}{4}$
2) $\frac{1}{3}$
3) $\frac{1}{2}$
4) None of these
Solution: Explanation: No Explanation
Fundamental definite integration Definite integration by substitution

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