state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Engineering Mathematics Calculus Definite Integrals
The value of the integral \(\mathop \smallint \limits_{ - \infty }^\infty \frac{{dx}}{{1 + {x^2}}}\) is
1
-π
2
\( - \frac{\pi }{2}\)
3
π/2
4
π
5
Question Not Attempted