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Consider the sequence un=sum(r=1)^n r/2^...

Consider the sequence `u_n=sum_(r=1)^n r/2^r , n >= 1` then the `limit_(n->oo) u_n`

A

1

B

e

C

`1/2`

D

2

Text Solution

Verified by Experts

The correct Answer is:
D
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