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JEE Advance2016
Paper-2
Question
The value of $\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \frac{x^2 \cos x}{1+e^x} d x$ is equal to
Select the correct option:
A
$\frac{\pi^2}{4}-2$
B
$\frac{\pi^2}{4}+2$
C
$\pi^2-\mathrm{e}^{\pi / 2}$
D
$\pi^2+\mathrm{e}^{\pi / 2}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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Showing 18 questions
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QJEE Advance 20102010
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The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm . The smallest wavelength in the...
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