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September 20, 2014

September 20, 2014

Posted by **Ann** on Thursday, April 3, 2014 at 11:53pm.

please explain how to solve this

- Calculus -
**Steve**, Friday, April 4, 2014 at 12:09amSince f(2) = -21,

f^-1(-21) = 2

f'(x) = -6x^2-3

(f^-1)'(-21) = 1/f'(f^-1(-21)) = 1/f'(2) = -1/27

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