(a) Find the domain and range of 1'. (Enter your answers using interval notation.) (b) Find the zero off. m= (c) Determine the open intervals on which 1' is increasing, decreasing, or constant. (Enter your answers using int notation. If an answer does not exist, enter DNE.) (d) Approximate any relative minimum or relative maximum values off. relative minimum (x, y) =( |:| ) relative maximum (x, y) = ( |:| ) constant