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cot^(-1)(2cdot1^2)+cot^(-1)(2cdot2^2)+co...

`cot^(-1)(2cdot1^2)+cot^(-1)(2cdot2^2)`+cot^(-1)(2cdot3^2)+...` upto `infty` is equal to

A

`pi/4`

B

`pi/3`

C

`pi/2`

D

`pi/5`

Text Solution

Verified by Experts

The correct Answer is:
A
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