WBJEE 2020 Math Solved Paper

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Question : 62 of 75

Marks: +1, -0

Let 0 < α < β < 1. Then

lim

n→∞

‌

n

∑

k=1

1

(k+α)

∫

1

(k+β)

dx

1+x

is

loge
β
α
log‌
1+β
1+α
loge
1+α
1+β
∞

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