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cot^(-1)((sqrt(1+x^(2))-1)/(x))=...

`cot^(-1)((sqrt(1+x^(2))-1)/(x))`=

A

(a) `(pi)/(2)-(1)/(2)cot^(-1)x`

B

(b) `cot^(-1)x`

C

(c) `-(1)/(2)tan^(-1)x`

D

(d) `(pi)/(2)-(1)/(2)tan^(-1)x`

Text Solution

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The correct Answer is:
D
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