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:<math>\int_0^\frac{\pi}{4}(\sec{x}\,\tan{x})^2\,dx</math>
:<math>\int_0^\frac{\pi}{4}(\sec{x}\,\tan{x})^2\,dx</math>
:<math> = \int_0^\frac{\pi}{4}(\sin{x}\,(\frac{\sin{x}}{\cos^2{x}})\,dx</math>
[[category:mathematics]]
[[category:mathematics]]
[[category:calculus]]
[[category:calculus]]