(1 point) Let f(x)=6x+(4/x). Find the open intervals on which ff is increasing (decreasing). Then determine the xx-coordinates of all relative maxima (minima).

1.	ff is increasing on the intervals
2.	ff is decreasing on the intervals
3.	The relative maxima of ff occur at xx =
4.	The relative minima of ff occur at xx =

Notes: In the first two, your answer should either be a single interval, such as (0,1), a comma-separated list of intervals, such as (-inf, 2), (3,4), or the word "none".

In the last two, your answer should be a comma-separated list of xx values or the word "none".