Simplify when possible

MATHEMATICS · Subjective · AP · Calculus AB · Differentiation: Composite, Implicit, and Inverse Functions · Differentiation: Composite, Implicit, and Inverse Functions

Problem

Simplify when possible. The answers are in Chapter 19. 9. Find f′(x)f^{\prime}(x) if f(x)=x2+1x2−1f(x)=\sqrt{\frac{x^{2}+1}{x^{2}-1}}.

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