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The sum of the series cot^(-1)((9)/(2))...

The sum of the series `cot^(-1)((9)/(2))+cot^(-1)((33)/(4))+cot^(-1)((129)/(8))+…….oo` is equal to :

A

`cot^(-1)(2)`

B

`cot^(-1)(3)`

C

`cot^(-1)(-1)`

D

`cot^(-1)(1)`

Text Solution

Verified by Experts

The correct Answer is:
A
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