Find all relative extrema of f(x) = (x^2 + 4)/ x. use the second derivative test.
f '(x)= (x^2 - 4)/x^2
f ''(x)= -8x/x^4
I don't know what to do from here, how do I find the relative extrema?
Follow Math Help Forum on Facebook and Google+
The same way I described in your other thread. Find critical points, draw a number line, test regions in between critical points and decide if a sign change occurs.
View Tag Cloud