4m2 934- Consider the function at) : (a) f is increasing for a: E (b) f is decreasing for :1: E (c) The local maxima of f occur at a: = (d) The local minima of f occur at m = Note: Input U, infinity, and -infinity for union, co, and 00, respectively. If there are multiple answers, separate them by commas. If there is no answer, input none