Mathematics · 2021
JEE Main · 26 February 2021, Shift 1 · Q69
The value of ∫_-π / 2^π / 2 (cos^2 x)/(1+3^x) d x is:
The value of $\displaystyle \int_{-\pi / 2}^{\pi / 2} \frac{\cos ^2 x}{1+3^x} \mathrm{~d} x$ is :
Official answer
(3)
$\displaystyle \frac{\pi}{4}$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.