Please help with this calculus question involving intervals, min and maximums. The problem is f(x) 6x + (6/x)

(1 point) Let f(x) = 6x + 6x.

(A) Use interval notation to indicate where f(x) is increasing.

** Note: ** Use 'INF' for ∞, '-INF' for −∞, and use 'U' for the union symbol. Increasing:

(B) Use interval notation to indicate where f(x) is decreasing. Decreasing:

(C) List the x values of all local maxima of f. If there are no local maxima, enter 'NONE'. x values of local maximums =

(D) List the x values of all local minima of f. If there are no local minima, enter 'NONE'. x values of local minimums =