MathematicsEasy210×since 2002Q3285limx→∞(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 :Atan^–1 (2)Btan^–1 (3)Cπ4{\pi \over 4}4πDπ2{\pi \over 2}2πCheck answerSkip