Locate the Absolute Extrema of the Given Function on the Closed

Multiple Choice

Locate the absolute extrema of the given function on the closed interval [-48,48]. $f ( x ) = \frac { 48 x } { x ^ { 2 } + 16 }$

A) absolute max: f(4) = 6
B) absolute min: f(-4) = -6
C) no absolute max
D) no absolute min
E) both A and D
F) both A and B