Teaching UP TGT Mock Test Series 2025 Mathematics Integral Calculus Definite Integrals

The value of integral \(\int_0^{\pi / 2} \frac{\phi(x)}{\phi(x)+\phi(\pi / 2-x)} d x\) is

1
\(\frac{\pi}{4}\)
2
\(\frac{\pi}{2}\)
3
π 
4
none of these
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