Posted by greg on Tuesday, November 25, 2008 at 2:30am.
f(x)=x^3/(x^21)
find the regions of concavity and inflection points

calculus  Anonymous, Tuesday, November 25, 2008 at 8:41pm
Use the 2nd derivative test for that equation to plot out the points where "x" is positive and negative.
Positive = concave up
Negative = concave down
Inflection points exist where the graph moves from concave up to concave down(positive to negative)