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\[\int\limits_{ - \pi /4}^{\pi /4} {\frac{{{x^{11}} - 3{x^9} + 8{x^3} - 4x + 1}}{{{{\sec }^2}x}}dx = } \]

Last updated date: 15th Mar 2023
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Answer
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428.7k+ views
The expression can be simplified as:

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Hence, answer is 2.