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# Find the derivative. Simplify where possible.$y = x \tanh^{-1}x + \ln \sqrt {1 - x^2}$

## $\tanh ^{-1} x$

Derivatives

Differentiation

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### Video Transcript

we know that 10 h the negative one of you. In other words, inverse tangent is you prime over one month's you square. Therefore, we can write this as one nice x squared plus negative access just minus X over one minus X squared. And this simplifies to tangent h the negative one of acts. So that's the inverse.

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