JEE Main 2019 — Math solution | Fundamenthol

JEE Main2019Math

Q.

$n \to \infty lim (\frac{n}{n ^{2} + 1 ^{2}} + \frac{n}{n ^{2} + 2 ^{2}} + \frac{n}{n ^{2} + 3 ^{2}} + ......... + \frac{1}{5 n})$ is equal to :

A
$\frac{π}{4}$
B
tan^–1(3)
C
tan^–1(2)
D
$\frac{π}{2}$

Solution

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