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Evaluate the following integrals: \[ \int x\left(\frac{\sec 2 x-1}{\sec 2 x+1}\right) d x \]
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Evaluate the following integrals:
\[
\int x\left(\frac{\sec 2 x-1}{\sec 2 x+1}\right) d x
\]
\[
\int x\left(\frac{\sec 2 x-1}{\sec 2 x+1}\right) d x
\]