Let x and y be nonnegative real numbers. If xy = \frac{2}{5}, then find the minimum value of 6x + \frac{3}{5y}.
xy = 2/5
y = (2/5)x^(-1)
6x + 3 / (5 * (2/5) x^(-1)) =
6x + (3/2)x
(15/2) x
There is no minimum......this is a line through the origin with a slope of 15 / 2
+153 
