Homework Help: calculus

Posted by Ting on Monday, March 19, 2012 at 3:04pm.

Let f (x) =7x-5/x+3
. Find the open intervals
on which f is concave up (down). Then determine the xcoordinates
of all inflection points of f .
1. f is concave up on the intervals
2. f is concave down on the intervals
3. The inflection points occur at x =

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