JEE Main 201912 Jan, Evening shiftMathematicsEasyIntegral Calculus369× since 2002limx→∞(nn2+12+nn2+22+nn2+32+.....+15n)\mathop {\lim }\limits_{x \to \infty } \left( {{n \over {{n^2} + {1^2}}} + {n \over {{n^2} + {2^2}}} + {n \over {{n^2} + {3^2}}} + ..... + {1 \over {5n}}} \right)x→∞lim(n2+12n+n2+22n+n2+32n+.....+5n1) is equal to :AOption A. tan^–1 (2)BOption B. tan^–1 (3)COption C. π4{\pi \over 4}4πDOption D. π2{\pi \over 2}2πCheckSkip · show solution