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July 6, 2015

Homework Help: Calculus

Posted by Leasha on Tuesday, January 1, 2013 at 12:38pm.

Find the extreme value(s) of the function f(x)=1/(1-x^2).

I tried, and for the first derivative I got -1/(2*sqrt((1-x^2)^3)). I then found critical values of the function to be -1 and 1.
However, the textbook says that the minimum value is 1 at f(0), and I have absolutely no idea where they came up with that answer... Help please!

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