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"Tanh"^(-1) x = a log ((1+x)/(1-x)), |x|...

`"Tanh"^(-1) x = a log ((1+x)/(1-x)), |x| lt 1 rArr a `=

A

`1`

B

`2`

C

`1/2`

D

`1/4`

Text Solution

Verified by Experts

The correct Answer is:
C
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