engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Mathematics Integral Calculus Definite Integrals
\(\lim \limits_{n \rightarrow \infty} \sum\limits_{r = 1}^n {\frac{1}{{\sqrt {2nr - {r^2}} }} =}\)
1
0
2
\(\frac{1}{2}\)
3
\(\frac{\pi}{2}+1\)
4
\(\frac{\pi}{2}\)