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If "Tanh"^(-1) (1 - sqrt (1 -x^2))/x = ...

If `"Tanh"^(-1) (1 - sqrt (1 -x^2))/x = 4` then x =

A

`"tanh"(1//4)`

B

tanh 2

C

tanh 4

D

tanh 8

Text Solution

Verified by Experts

The correct Answer is:
D
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