Let
f(x) = 6x^2 - 2x^4
(A) Use interval notation to indicate where f(x) is increasing
Note: Use INF' for [infinity], INF for-[infinity], and use 'U' for the union symbol.
Increasing: _____________
(B) Use interval notation to indicate where f(x) is decreasing.
Decreasing: _______________
(C) List the values of all local maxima of f| if there are no local maxima, enter 'NONE' x1 values of local maximums = ______________
(D) List the an values of all local minima of f| If there are no local minima, enter NONE. x1 values of local minimums = _________