Friday
April 18, 2014

Homework Help: Concavity-Calculus

Posted by Lisa on Sunday, March 10, 2013 at 7:46pm.

Determine the concavity for f(x)= 4/x^2-1

I took the second derivative and solved for zeros. I got x=-1 and x=1. However when plugged into the orig. equation this results in 4/0 (undefined). Does this mean there is no concavity?

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